3660398644 has 12 divisors (see below), whose sum is σ = 7320797344. Its totient is φ = 1568742264.

The previous prime is 3660398611. The next prime is 3660398663. The reversal of 3660398644 is 4468930663.

3660398644 is an admirable number.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 65364234 + ... + 65364289.

Almost surely, 2^3660398644 is an apocalyptic number.

It is an amenable number.

3660398644 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

3660398644 is a wasteful number, since it uses less digits than its factorization.

3660398644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130728534 (or 130728532 counting only the distinct ones).

The product of its (nonzero) digits is 2239488, while the sum is 49.

The square root of 3660398644 is about 60501.2284503381. The cubic root of 3660398644 is about 1541.1424934030.

The spelling of 3660398644 in words is "three billion, six hundred sixty million, three hundred ninety-eight thousand, six hundred forty-four".