870976778 has 16 divisors (see below), whose sum is σ = 1544590080. Its totient is φ = 360404016.

The previous prime is 870976763. The next prime is 870976783. The reversal of 870976778 is 877679078.

It is a super-2 number, since 2×870976778² = 1517201095630522568, which contains 22 as substring.

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, 1072226 + ... + 1073037.

It is an arithmetic number, because the mean of its divisors is an integer number (96536880).

Almost surely, 2^870976778 is an apocalyptic number.

870976778 is a deficient number, since it is larger than the sum of its proper divisors (673613302).

870976778 is a wasteful number, since it uses less digits than its factorization.

870976778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2145301.

The product of its (nonzero) digits is 8297856, while the sum is 59.

The square root of 870976778 is about 29512.3157003987. The cubic root of 870976778 is about 954.9974061313.

The spelling of 870976778 in words is "eight hundred seventy million, nine hundred seventy-six thousand, seven hundred seventy-eight".