365645061 has 24 divisors (see below), whose sum is σ = 564197400. Its totient is φ = 227383296.

The previous prime is 365645057. The next prime is 365645087. The reversal of 365645061 is 160546563.

365645061 is a `hidden beast` number, since 3 + 6 + 5 + 645 + 0 + 6 + 1 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 108900 + 365536161 = 330^2 + 19119^2 .

It is not a de Polignac number, because 365645061 - 2² = 365645057 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (365645261) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6715 + ... + 27863.

It is an arithmetic number, because the mean of its divisors is an integer number (23508225).

Almost surely, 2^365645061 is an apocalyptic number.

It is an amenable number.

365645061 is a deficient number, since it is larger than the sum of its proper divisors (198552339).

365645061 is a wasteful number, since it uses less digits than its factorization.

365645061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21285 (or 21282 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 36.

The square root of 365645061 is about 19121.8477402159. The cubic root of 365645061 is about 715.0777042386.

The spelling of 365645061 in words is "three hundred sixty-five million, six hundred forty-five thousand, sixty-one".