3659566860 has 72 divisors (see below), whose sum is σ = 11113685856. Its totient is φ = 974741760.

The previous prime is 3659566853. The next prime is 3659566873. The reversal of 3659566860 is 686659563.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 3659566797 and 3659566806.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 148200 + ... + 171120.

It is an arithmetic number, because the mean of its divisors is an integer number (154356748).

Almost surely, 2^3659566860 is an apocalyptic number.

3659566860 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3659566860 is an abundant number, since it is smaller than the sum of its proper divisors (7454118996).

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

3659566860 is a wasteful number, since it uses less digits than its factorization.

3659566860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23823 (or 23818 counting only the distinct ones).

The product of its (nonzero) digits is 6998400, while the sum is 54.

The square root of 3659566860 is about 60494.3539514226. The cubic root of 3659566860 is about 1541.0257488529.

It can be divided in two parts, 365956 and 6860, that added together give a triangular number (372816 = T₈₆₃).

The spelling of 3659566860 in words is "three billion, six hundred fifty-nine million, five hundred sixty-six thousand, eight hundred sixty".