3900660 has 24 divisors (see below), whose sum is σ = 10922016. Its totient is φ = 1040160.

The previous prime is 3900649. The next prime is 3900679. The reversal of 3900660 is 660093.

It is a self number, because there is not a number n which added to its sum of digits gives 3900660.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32446 + ... + 32565.

It is an arithmetic number, because the mean of its divisors is an integer number (455084).

Almost surely, 2^3900660 is an apocalyptic number.

3900660 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3900660 is an abundant number, since it is smaller than the sum of its proper divisors (7021356).

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

3900660 is a wasteful number, since it uses less digits than its factorization.

3900660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65023 (or 65021 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 24.

The square root of 3900660 is about 1975.0088607396. The cubic root of 3900660 is about 157.4149704803.

It can be divided in two parts, 3900 and 660, that added together give a triangular number (4560 = T₉₅).

The spelling of 3900660 in words is "three million, nine hundred thousand, six hundred sixty".