647072998 has 32 divisors (see below), whose sum is σ = 1179632160. Its totient is φ = 262133760.

The previous prime is 647072971. The next prime is 647073019. The reversal of 647072998 is 899270746.

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, 30715 + ... + 47302.

It is an arithmetic number, because the mean of its divisors is an integer number (36863505).

Almost surely, 2^647072998 is an apocalyptic number.

647072998 is a deficient number, since it is larger than the sum of its proper divisors (532559162).

647072998 is a wasteful number, since it uses less digits than its factorization.

647072998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78072.

The product of its (nonzero) digits is 1524096, while the sum is 52.

The square root of 647072998 is about 25437.6295672376. The cubic root of 647072998 is about 864.9369007398.

The spelling of 647072998 in words is "six hundred forty-seven million, seventy-two thousand, nine hundred ninety-eight".