7164986857 has 16 divisors (see below), whose sum is σ = 8436822912. Its totient is φ = 5956951680.

The previous prime is 7164986839. The next prime is 7164986867. The reversal of 7164986857 is 7586894617.

It is a cyclic number.

It is not a de Polignac number, because 7164986857 - 2⁷ = 7164986729 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 7164986795 and 7164986804.

It is not an unprimeable number, because it can be changed into a prime (7164986867) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22503 + ... + 121804.

It is an arithmetic number, because the mean of its divisors is an integer number (527301432).

Almost surely, 2^7164986857 is an apocalyptic number.

It is an amenable number.

7164986857 is a deficient number, since it is larger than the sum of its proper divisors (1271836055).

7164986857 is a wasteful number, since it uses less digits than its factorization.

7164986857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144528.

The product of its digits is 20321280, while the sum is 61.

The square root of 7164986857 is about 84646.2453804066. The cubic root of 7164986857 is about 1927.8436059422.

The spelling of 7164986857 in words is "seven billion, one hundred sixty-four million, nine hundred eighty-six thousand, eight hundred fifty-seven".