6769644 has 72 divisors (see below), whose sum is σ = 19056240. Its totient is φ = 1862784.

The previous prime is 6769639. The next prime is 6769649. The reversal of 6769644 is 4469676.

It is an interprime number because it is at equal distance from previous prime (6769639) and next prime (6769649).

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a nialpdrome in base 14.

It is a junction number, because it is equal to n+sod(n) for n = 6769596 and 6769605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6769649) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16854 + ... + 17250.

It is an arithmetic number, because the mean of its divisors is an integer number (264670).

Almost surely, 2^6769644 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6769644, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9528120).

6769644 is an abundant number, since it is smaller than the sum of its proper divisors (12286596).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6769644 is a wasteful number, since it uses less digits than its factorization.

6769644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 447 (or 438 counting only the distinct ones).

The product of its digits is 217728, while the sum is 42.

The square root of 6769644 is about 2601.8539543948. The cubic root of 6769644 is about 189.1713124370.

Subtracting from 6769644 its reverse (4469676), we obtain a cube (2299968 = 132³).

The spelling of 6769644 in words is "six million, seven hundred sixty-nine thousand, six hundred forty-four".