3660431880 has 128 divisors (see below), whose sum is σ = 12755969280. Its totient is φ = 822942720.

The previous prime is 3660431869. The next prime is 3660431903. The reversal of 3660431880 is 881340663.

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 31 ways as a sum of consecutive naturals, for example, 15522 + ... + 86958.

It is an arithmetic number, because the mean of its divisors is an integer number (99656010).

Almost surely, 2^3660431880 is an apocalyptic number.

3660431880 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3660431880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6377984640).

3660431880 is an abundant number, since it is smaller than the sum of its proper divisors (9095537400).

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

3660431880 is a wasteful number, since it uses less digits than its factorization.

3660431880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71519 (or 71515 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 39.

The square root of 3660431880 is about 60501.5031218233. The cubic root of 3660431880 is about 1541.1471578546.

The spelling of 3660431880 in words is "three billion, six hundred sixty million, four hundred thirty-one thousand, eight hundred eighty".