660662432 has 24 divisors (see below), whose sum is σ = 1377190836. Its totient is φ = 310899712.

The previous prime is 660662423. The next prime is 660662459. The reversal of 660662432 is 234266066.

It can be written as a sum of positive squares in 2 ways, for example, as 489471376 + 171191056 = 22124^2 + 13084^2 .

It is a junction number, because it is equal to n+sod(n) for n = 660662392 and 660662401.

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, 606683 + ... + 607770.

Almost surely, 2^660662432 is an apocalyptic number.

It is an amenable number.

660662432 is an abundant number, since it is smaller than the sum of its proper divisors (716528404).

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

660662432 is a wasteful number, since it uses less digits than its factorization.

660662432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1214480 (or 1214472 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 35.

The square root of 660662432 is about 25703.3544892491. The cubic root of 660662432 is about 870.9499607225.

The spelling of 660662432 in words is "six hundred sixty million, six hundred sixty-two thousand, four hundred thirty-two".