797761915 has 4 divisors (see below), whose sum is σ = 957314304. Its totient is φ = 638209528.

The previous prime is 797761901. The next prime is 797761919. The reversal of 797761915 is 519167797.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 519167797 = 883 ⋅587959.

It is a cyclic number.

It is not a de Polignac number, because 797761915 - 2²¹ = 795664763 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (797761919) 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, 79776187 + ... + 79776196.

It is an arithmetic number, because the mean of its divisors is an integer number (239328576).

Almost surely, 2^797761915 is an apocalyptic number.

797761915 is a deficient number, since it is larger than the sum of its proper divisors (159552389).

797761915 is a wasteful number, since it uses less digits than its factorization.

797761915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159552388.

The product of its digits is 833490, while the sum is 52.

The square root of 797761915 is about 28244.6794104660. The cubic root of 797761915 is about 927.4512689843.

The spelling of 797761915 in words is "seven hundred ninety-seven million, seven hundred sixty-one thousand, nine hundred fifteen".