660733416 has 64 divisors (see below), whose sum is σ = 2097571200. Its totient is φ = 188780544.

The previous prime is 660733391. The next prime is 660733427. The reversal of 660733416 is 614337066.

It is a happy number.

660733416 is a `hidden beast` number, since 6 + 607 + 3 + 3 + 41 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 216985 + ... + 220008.

It is an arithmetic number, because the mean of its divisors is an integer number (32774550).

Almost surely, 2^660733416 is an apocalyptic number.

It is an amenable number.

660733416 is an abundant number, since it is smaller than the sum of its proper divisors (1436837784).

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

660733416 is a wasteful number, since it uses less digits than its factorization.

660733416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 437015 (or 437005 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 36.

The square root of 660733416 is about 25704.7352836010. The cubic root of 660733416 is about 870.9811522937.

The spelling of 660733416 in words is "six hundred sixty million, seven hundred thirty-three thousand, four hundred sixteen".