647364404 has 12 divisors (see below), whose sum is σ = 1137751524. Its totient is φ = 322292544.

The previous prime is 647364401. The next prime is 647364427. The reversal of 647364404 is 404463746.

It can be written as a sum of positive squares in 2 ways, for example, as 388090000 + 259274404 = 19700^2 + 16102^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (647364401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 346367 + ... + 348230.

It is an arithmetic number, because the mean of its divisors is an integer number (94812627).

Almost surely, 2^647364404 is an apocalyptic number.

It is an amenable number.

647364404 is a deficient number, since it is larger than the sum of its proper divisors (490387120).

647364404 is a wasteful number, since it uses less digits than its factorization.

647364404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 694834 (or 694832 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 38.

The square root of 647364404 is about 25443.3567753942. The cubic root of 647364404 is about 865.0667212169.

The spelling of 647364404 in words is "six hundred forty-seven million, three hundred sixty-four thousand, four hundred four".