816057 has 12 divisors (see below), whose sum is σ = 1286064. Its totient is φ = 494520.

The previous prime is 816047. The next prime is 816077. The reversal of 816057 is 750618.

It is not a de Polignac number, because 816057 - 2¹⁰ = 815033 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 816057.

It is not an unprimeable number, because it can be changed into a prime (816037) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4023 + ... + 4220.

It is an arithmetic number, because the mean of its divisors is an integer number (107172).

2⁸¹⁶⁰⁵⁷ is an apocalyptic number.

It is an amenable number.

816057 is a deficient number, since it is larger than the sum of its proper divisors (470007).

816057 is a wasteful number, since it uses less digits than its factorization.

816057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8260 (or 8257 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 27.

The square root of 816057 is about 903.3587327302. The cubic root of 816057 is about 93.4487503558.

The spelling of 816057 in words is "eight hundred sixteen thousand, fifty-seven".