6900645 has 16 divisors (see below), whose sum is σ = 11074752. Its totient is φ = 3669120.

The previous prime is 6900643. The next prime is 6900659. The reversal of 6900645 is 5460096.

It is not a de Polignac number, because 6900645 - 2¹ = 6900643 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6900643) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7374 + ... + 8256.

It is an arithmetic number, because the mean of its divisors is an integer number (692172).

Almost surely, 2^6900645 is an apocalyptic number.

It is an amenable number.

6900645 is a deficient number, since it is larger than the sum of its proper divisors (4174107).

6900645 is a wasteful number, since it uses less digits than its factorization.

6900645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1412.

The product of its (nonzero) digits is 6480, while the sum is 30.

The square root of 6900645 is about 2626.9078780955. The cubic root of 6900645 is about 190.3837580742.

The spelling of 6900645 in words is "six million, nine hundred thousand, six hundred forty-five".