3665377920 has 64 divisors (see below), whose sum is σ = 11683398240. Its totient is φ = 977433600.

The previous prime is 3665377909. The next prime is 3665377927. The reversal of 3665377920 is 297735663.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 3665377920.

It is not an unprimeable number, because it can be changed into a prime (3665377927) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 952606 + ... + 956445.

Almost surely, 2^3665377920 is an apocalyptic number.

3665377920 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3665377920 is an abundant number, since it is smaller than the sum of its proper divisors (8018020320).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3665377920 is a wasteful number, since it uses less digits than its factorization.

3665377920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1909073 (or 1909061 counting only the distinct ones).

The product of its (nonzero) digits is 1428840, while the sum is 48.

The square root of 3665377920 is about 60542.3646713605. The cubic root of 3665377920 is about 1541.8409871677.

The spelling of 3665377920 in words is "three billion, six hundred sixty-five million, three hundred seventy-seven thousand, nine hundred twenty".