6470639 has 8 divisors (see below), whose sum is σ = 7421568. Its totient is φ = 5526360.

The previous prime is 6470627. The next prime is 6470641. The reversal of 6470639 is 9360746.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 6470639 - 2¹² = 6466543 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6470599 and 6470608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6470689) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 644 + ... + 3654.

It is an arithmetic number, because the mean of its divisors is an integer number (927696).

Almost surely, 2^6470639 is an apocalyptic number.

6470639 is a deficient number, since it is larger than the sum of its proper divisors (950929).

6470639 is a wasteful number, since it uses less digits than its factorization.

6470639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3325.

The product of its (nonzero) digits is 27216, while the sum is 35.

The square root of 6470639 is about 2543.7450737053. The cubic root of 6470639 is about 186.3441330085.

The spelling of 6470639 in words is "six million, four hundred seventy thousand, six hundred thirty-nine".