3977660265 has 16 divisors (see below), whose sum is σ = 6423738048. Its totient is φ = 2101591616.

The previous prime is 3977660257. The next prime is 3977660299. The reversal of 3977660265 is 5620667793.

It is a cyclic number.

It is not a de Polignac number, because 3977660265 - 2³ = 3977660257 is a prime.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1237542 + ... + 1240751.

It is an arithmetic number, because the mean of its divisors is an integer number (401483628).

Almost surely, 2^3977660265 is an apocalyptic number.

It is an amenable number.

3977660265 is a deficient number, since it is larger than the sum of its proper divisors (2446077783).

3977660265 is a wasteful number, since it uses less digits than its factorization.

3977660265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2478408.

The product of its (nonzero) digits is 2857680, while the sum is 51.

The square root of 3977660265 is about 63068.6948097073. The cubic root of 3977660265 is about 1584.4403567763.

The spelling of 3977660265 in words is "three billion, nine hundred seventy-seven million, six hundred sixty thousand, two hundred sixty-five".