3665516373 has 6 divisors (see below), whose sum is σ = 5294634774. Its totient is φ = 2443677576.

The previous prime is 3665516363. The next prime is 3665516377. The reversal of 3665516373 is 3736155663.

3665516373 is a `hidden beast` number, since 3 + 6 + 6 + 5 + 5 + 1 + 637 + 3 = 666.

It can be written as a sum of positive squares in only one way, i.e., 3648401604 + 17114769 = 60402^2 + 4137^2 .

It is not a de Polignac number, because 3665516373 - 2⁴ = 3665516357 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3665516377) 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, 203639790 + ... + 203639807.

It is an arithmetic number, because the mean of its divisors is an integer number (882439129).

Almost surely, 2^3665516373 is an apocalyptic number.

It is an amenable number.

3665516373 is a deficient number, since it is larger than the sum of its proper divisors (1629118401).

3665516373 is a wasteful number, since it uses less digits than its factorization.

3665516373 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 407279603 (or 407279600 counting only the distinct ones).

The product of its digits is 1020600, while the sum is 45.

The square root of 3665516373 is about 60543.5080995477. The cubic root of 3665516373 is about 1541.8604003384.

The spelling of 3665516373 in words is "three billion, six hundred sixty-five million, five hundred sixteen thousand, three hundred seventy-three".