816337377 has 6 divisors (see below), whose sum is σ = 1179154002. Its totient is φ = 544224912.

The previous prime is 816337351. The next prime is 816337381. The reversal of 816337377 is 773733618.

816337377 is a `hidden beast` number, since 8 + 1 + 633 + 7 + 3 + 7 + 7 = 666.

It can be written as a sum of positive squares in only one way, i.e., 793210896 + 23126481 = 28164^2 + 4809^2 .

It is not a de Polignac number, because 816337377 - 2¹⁵ = 816304609 is a prime.

It is not an unprimeable number, because it can be changed into a prime (816337387) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 45352068 + ... + 45352085.

It is an arithmetic number, because the mean of its divisors is an integer number (196525667).

Almost surely, 2^816337377 is an apocalyptic number.

It is an amenable number.

816337377 is a deficient number, since it is larger than the sum of its proper divisors (362816625).

816337377 is a wasteful number, since it uses less digits than its factorization.

816337377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90704159 (or 90704156 counting only the distinct ones).

The product of its digits is 444528, while the sum is 45.

The square root of 816337377 is about 28571.6183825838. The cubic root of 816337377 is about 934.5945135675.

The spelling of 816337377 in words is "eight hundred sixteen million, three hundred thirty-seven thousand, three hundred seventy-seven".