647199402 has 8 divisors (see below), whose sum is σ = 1294398816. Its totient is φ = 215733132.

The previous prime is 647199359. The next prime is 647199437. The reversal of 647199402 is 204991746.

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

647199402 is an admirable number.

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, 53933278 + ... + 53933289.

It is an arithmetic number, because the mean of its divisors is an integer number (161799852).

Almost surely, 2^647199402 is an apocalyptic number.

647199402 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.

647199402 is a wasteful number, since it uses less digits than its factorization.

647199402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107866572.

The product of its (nonzero) digits is 108864, while the sum is 42.

The square root of 647199402 is about 25440.1140327633. The cubic root of 647199402 is about 864.9932181187.

The spelling of 647199402 in words is "six hundred forty-seven million, one hundred ninety-nine thousand, four hundred two".