3764864565 has 96 divisors (see below), whose sum is σ = 8334772992. Its totient is φ = 1526400000.

The previous prime is 3764864539. The next prime is 3764864599. The reversal of 3764864565 is 5654684673.

3764864565 is a `hidden beast` number, since 3 + 76 + 4 + 8 + 6 + 4 + 565 = 666.

It is not a de Polignac number, because 3764864565 - 2⁶ = 3764864501 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 128815 + ... + 155315.

It is an arithmetic number, because the mean of its divisors is an integer number (86820552).

Almost surely, 2^3764864565 is an apocalyptic number.

3764864565 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

3764864565 is an abundant number, since it is smaller than the sum of its proper divisors (4569908427).

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

3764864565 is a wasteful number, since it uses less digits than its factorization.

3764864565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26571 (or 26568 counting only the distinct ones).

The product of its digits is 14515200, while the sum is 54.

The square root of 3764864565 is about 61358.4921995318. The cubic root of 3764864565 is about 1555.6663314696. Note that the first 3 decimals are identical.

The spelling of 3764864565 in words is "three billion, seven hundred sixty-four million, eight hundred sixty-four thousand, five hundred sixty-five".