660347948 has 12 divisors (see below), whose sum is σ = 1244502000. Its totient is φ = 304775952.

The previous prime is 660347899. The next prime is 660347971. The reversal of 660347948 is 849743066.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6349448 + ... + 6349551.

It is an arithmetic number, because the mean of its divisors is an integer number (103708500).

Almost surely, 2^660347948 is an apocalyptic number.

It is an amenable number.

660347948 is a deficient number, since it is larger than the sum of its proper divisors (584154052).

660347948 is a wasteful number, since it uses less digits than its factorization.

660347948 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12699016 (or 12699014 counting only the distinct ones).

The product of its (nonzero) digits is 870912, while the sum is 47.

The square root of 660347948 is about 25697.2361938011. The cubic root of 660347948 is about 870.8117442468.

The spelling of 660347948 in words is "six hundred sixty million, three hundred forty-seven thousand, nine hundred forty-eight".