646350894 has 32 divisors (see below), whose sum is σ = 1641527040. Its totient is φ = 184671576.

The previous prime is 646350851. The next prime is 646350923. The reversal of 646350894 is 498053646.

646350894 is a `hidden beast` number, since 6 + 4 + 635 + 0 + 8 + 9 + 4 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 854584 + ... + 855339.

It is an arithmetic number, because the mean of its divisors is an integer number (51297720).

Almost surely, 2^646350894 is an apocalyptic number.

646350894 is an abundant number, since it is smaller than the sum of its proper divisors (995176146).

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

646350894 is a wasteful number, since it uses less digits than its factorization.

646350894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1709941 (or 1709935 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 45.

The square root of 646350894 is about 25423.4319870469. The cubic root of 646350894 is about 864.6150375837.

The spelling of 646350894 in words is "six hundred forty-six million, three hundred fifty thousand, eight hundred ninety-four".