660714642 has 48 divisors (see below), whose sum is σ = 1666941120. Its totient is φ = 185211936.

The previous prime is 660714619. The next prime is 660714667. The reversal of 660714642 is 246417066.

660714642 is a `hidden beast` number, since 6 + 6 + 0 + 7 + 1 + 4 + 642 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 660714597 and 660714606.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 42792 + ... + 56147.

It is an arithmetic number, because the mean of its divisors is an integer number (34727940).

Almost surely, 2^660714642 is an apocalyptic number.

660714642 is an abundant number, since it is smaller than the sum of its proper divisors (1006226478).

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

660714642 is a wasteful number, since it uses less digits than its factorization.

660714642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99007 (or 99004 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 36.

The square root of 660714642 is about 25704.3700953748. The cubic root of 660714642 is about 870.9729028976.

The spelling of 660714642 in words is "six hundred sixty million, seven hundred fourteen thousand, six hundred forty-two".