797664815 has 8 divisors (see below), whose sum is σ = 971484720. Its totient is φ = 628607232.

The previous prime is 797664793. The next prime is 797664851. The reversal of 797664815 is 518466797.

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

It is a cyclic number.

It is not a de Polignac number, because 797664815 - 2⁸ = 797664559 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1190210 + ... + 1190879.

It is an arithmetic number, because the mean of its divisors is an integer number (121435590).

Almost surely, 2^797664815 is an apocalyptic number.

797664815 is a deficient number, since it is larger than the sum of its proper divisors (173819905).

797664815 is a wasteful number, since it uses less digits than its factorization.

797664815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2381161.

The product of its digits is 2540160, while the sum is 53.

The square root of 797664815 is about 28242.9604503494. The cubic root of 797664815 is about 927.4136390555.

The spelling of 797664815 in words is "seven hundred ninety-seven million, six hundred sixty-four thousand, eight hundred fifteen".