816960976 has 40 divisors (see below), whose sum is σ = 1804900104. Its totient is φ = 354877440.

The previous prime is 816960973. The next prime is 816960979. The reversal of 816960976 is 679069618.

It is an interprime number because it is at equal distance from previous prime (816960973) and next prime (816960979).

It can be written as a sum of positive squares in 4 ways, for example, as 302760000 + 514200976 = 17400^2 + 22676^2 .

It is a Harshad number since it is a multiple of its sum of digits (52).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (816960971) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 111985 + ... + 119056.

Almost surely, 2^816960976 is an apocalyptic number.

It is an amenable number.

816960976 is an abundant number, since it is smaller than the sum of its proper divisors (987939128).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

816960976 is a wasteful number, since it uses less digits than its factorization.

816960976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231079 (or 231073 counting only the distinct ones).

The product of its (nonzero) digits is 979776, while the sum is 52.

The square root of 816960976 is about 28582.5292092915. The cubic root of 816960976 is about 934.8324314841.

The spelling of 816960976 in words is "eight hundred sixteen million, nine hundred sixty thousand, nine hundred seventy-six".