3640476805 has 64 divisors (see below), whose sum is σ = 5292518400. Its totient is φ = 2400959232.

The previous prime is 3640476757. The next prime is 3640476809. The reversal of 3640476805 is 5086740463.

3640476805 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 3640476805 - 2⁷ = 3640476677 is a prime.

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3640476809) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 6535587 + ... + 6536143.

It is an arithmetic number, because the mean of its divisors is an integer number (82695600).

Almost surely, 2^3640476805 is an apocalyptic number.

3640476805 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

3640476805 is a deficient number, since it is larger than the sum of its proper divisors (1652041595).

3640476805 is a wasteful number, since it uses less digits than its factorization.

3640476805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 723 (or 709 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 43.

The square root of 3640476805 is about 60336.3638695605. The cubic root of 3640476805 is about 1538.3414996460.

The spelling of 3640476805 in words is "three billion, six hundred forty million, four hundred seventy-six thousand, eight hundred five".