890656065 has 96 divisors (see below), whose sum is σ = 1762750080. Its totient is φ = 412397568.

The previous prime is 890656057. The next prime is 890656087. The reversal of 890656065 is 560656098.

890656065 is a `hidden beast` number, since 89 + 0 + 6 + 560 + 6 + 5 = 666.

It is not a de Polignac number, because 890656065 - 2³ = 890656057 is a prime.

It is a super-2 number, since 2×890656065² = 1586536452242568450, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 890656065.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 2522929 + ... + 2523281.

It is an arithmetic number, because the mean of its divisors is an integer number (18361980).

Almost surely, 2^890656065 is an apocalyptic number.

It is an amenable number.

890656065 is a deficient number, since it is larger than the sum of its proper divisors (872094015).

890656065 is a wasteful number, since it uses less digits than its factorization.

890656065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 623 (or 620 counting only the distinct ones).

The product of its (nonzero) digits is 388800, while the sum is 45.

The square root of 890656065 is about 29843.8614291113. The cubic root of 890656065 is about 962.1364689991.

The spelling of 890656065 in words is "eight hundred ninety million, six hundred fifty-six thousand, sixty-five".