3729640566 has 16 divisors (see below), whose sum is σ = 7699903488. Its totient is φ = 1203109800.

The previous prime is 3729640547. The next prime is 3729640643. The reversal of 3729640566 is 6650469273.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10025730 + ... + 10026101.

It is an arithmetic number, because the mean of its divisors is an integer number (481243968).

Almost surely, 2^3729640566 is an apocalyptic number.

3729640566 is an abundant number, since it is smaller than the sum of its proper divisors (3970262922).

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

3729640566 is a wasteful number, since it uses less digits than its factorization.

3729640566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20051867.

The product of its (nonzero) digits is 1632960, while the sum is 48.

The square root of 3729640566 is about 61070.7832437083. The cubic root of 3729640566 is about 1550.7995272986.

The spelling of 3729640566 in words is "three billion, seven hundred twenty-nine million, six hundred forty thousand, five hundred sixty-six".