816616964 has 12 divisors (see below), whose sum is σ = 1513143324. Its totient is φ = 384290304.

The previous prime is 816616949. The next prime is 816617027. The reversal of 816616964 is 469616618.

It can be written as a sum of positive squares in 2 ways, for example, as 252174400 + 564442564 = 15880^2 + 23758^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6004469 + ... + 6004604.

It is an arithmetic number, because the mean of its divisors is an integer number (126095277).

Almost surely, 2^816616964 is an apocalyptic number.

It is an amenable number.

816616964 is a deficient number, since it is larger than the sum of its proper divisors (696526360).

816616964 is a wasteful number, since it uses less digits than its factorization.

816616964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12009094 (or 12009092 counting only the distinct ones).

The product of its digits is 373248, while the sum is 47.

The square root of 816616964 is about 28576.5107037231. The cubic root of 816616964 is about 934.7011976659.

The spelling of 816616964 in words is "eight hundred sixteen million, six hundred sixteen thousand, nine hundred sixty-four".