3876624661 has 48 divisors (see below), whose sum is σ = 5012921088. Its totient is φ = 2969568000.

The previous prime is 3876624649. The next prime is 3876624707. The reversal of 3876624661 is 1664266783.

It is not a de Polignac number, because 3876624661 - 2⁵ = 3876624629 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3876624601) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3943176 + ... + 3944158.

It is an arithmetic number, because the mean of its divisors is an integer number (104435856).

Almost surely, 2^3876624661 is an apocalyptic number.

It is an amenable number.

3876624661 is a deficient number, since it is larger than the sum of its proper divisors (1136296427).

3876624661 is a wasteful number, since it uses less digits than its factorization.

3876624661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1202 (or 1195 counting only the distinct ones).

The product of its digits is 1741824, while the sum is 49.

The square root of 3876624661 is about 62262.5462135946. The cubic root of 3876624661 is about 1570.9098085841.

The spelling of 3876624661 in words is "three billion, eight hundred seventy-six million, six hundred twenty-four thousand, six hundred sixty-one".