646827692 has 12 divisors (see below), whose sum is σ = 1293655440. Its totient is φ = 277211856.

The previous prime is 646827683. The next prime is 646827739. The reversal of 646827692 is 296728646.

It is a happy number.

646827692 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 646827692.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11550467 + ... + 11550522.

It is an arithmetic number, because the mean of its divisors is an integer number (107804620).

Almost surely, 2^646827692 is an apocalyptic number.

It is an amenable number.

646827692 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

646827692 is a wasteful number, since it uses less digits than its factorization.

646827692 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23101000 (or 23100998 counting only the distinct ones).

The product of its digits is 1741824, while the sum is 50.

The square root of 646827692 is about 25432.8073951737. The cubic root of 646827692 is about 864.8275874529.

The spelling of 646827692 in words is "six hundred forty-six million, eight hundred twenty-seven thousand, six hundred ninety-two".