647208097 has 8 divisors (see below), whose sum is σ = 656776512. Its totient is φ = 637652400.

The previous prime is 647208043. The next prime is 647208103. The reversal of 647208097 is 790802746.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-647208097 is a prime.

It is a super-2 number, since 2×647208097² = 837756641644722818, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (647208797) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 158947 + ... + 162967.

It is an arithmetic number, because the mean of its divisors is an integer number (82097064).

Almost surely, 2^647208097 is an apocalyptic number.

It is an amenable number.

647208097 is a deficient number, since it is larger than the sum of its proper divisors (9568415).

647208097 is a wasteful number, since it uses less digits than its factorization.

647208097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6359.

The product of its (nonzero) digits is 169344, while the sum is 43.

The square root of 647208097 is about 25440.2849237189. The cubic root of 647208097 is about 864.9970917741.

The spelling of 647208097 in words is "six hundred forty-seven million, two hundred eight thousand, ninety-seven".