816017995 has 32 divisors (see below), whose sum is σ = 1085736960. Its totient is φ = 584987520.

The previous prime is 816017971. The next prime is 816018001. The reversal of 816017995 is 599710618.

It is a happy number.

It is not a de Polignac number, because 816017995 - 2⁵ = 816017963 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 399186 + ... + 401224.

It is an arithmetic number, because the mean of its divisors is an integer number (33929280).

Almost surely, 2^816017995 is an apocalyptic number.

816017995 is a deficient number, since it is larger than the sum of its proper divisors (269718965).

816017995 is a wasteful number, since it uses less digits than its factorization.

816017995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2235.

The product of its (nonzero) digits is 136080, while the sum is 46.

The square root of 816017995 is about 28566.0286879363. The cubic root of 816017995 is about 934.4726147836.

The spelling of 816017995 in words is "eight hundred sixteen million, seventeen thousand, nine hundred ninety-five".