6457572906 has 16 divisors (see below), whose sum is σ = 12925180800. Its totient is φ = 2150851808.

The previous prime is 6457572899. The next prime is 6457572907. The reversal of 6457572906 is 6092757546.

It is not an unprimeable number, because it can be changed into a prime (6457572907) 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, 409746 + ... + 425213.

It is an arithmetic number, because the mean of its divisors is an integer number (807823800).

Almost surely, 2^6457572906 is an apocalyptic number.

6457572906 is an abundant number, since it is smaller than the sum of its proper divisors (6467607894).

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

6457572906 is a wasteful number, since it uses less digits than its factorization.

6457572906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 836253.

The product of its (nonzero) digits is 3175200, while the sum is 51.

The square root of 6457572906 is about 80359.0250438618. The cubic root of 6457572906 is about 1862.1862089920.

The spelling of 6457572906 in words is "six billion, four hundred fifty-seven million, five hundred seventy-two thousand, nine hundred six".