7974876765 has 16 divisors (see below), whose sum is σ = 12825920448. Its totient is φ = 4231228416.

The previous prime is 7974876743. The next prime is 7974876781. The reversal of 7974876765 is 5676784797.

It is not a de Polignac number, because 7974876765 - 2⁹ = 7974876253 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 7974876696 and 7974876705.

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, 1374459 + ... + 1380248.

It is an arithmetic number, because the mean of its divisors is an integer number (801620028).

Almost surely, 2^7974876765 is an apocalyptic number.

It is an amenable number.

7974876765 is a deficient number, since it is larger than the sum of its proper divisors (4851043683).

7974876765 is a wasteful number, since it uses less digits than its factorization.

7974876765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2754908.

The product of its digits is 124467840, while the sum is 66.

The square root of 7974876765 is about 89302.1655112573. The cubic root of 7974876765 is about 1997.9042016651.

The spelling of 7974876765 in words is "seven billion, nine hundred seventy-four million, eight hundred seventy-six thousand, seven hundred sixty-five".