70231660 has 24 divisors (see below), whose sum is σ = 147646800. Its totient is φ = 28062144.

The previous prime is 70231639. The next prime is 70231687. The reversal of 70231660 is 6613207.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29847 + ... + 32113.

It is an arithmetic number, because the mean of its divisors is an integer number (6151950).

Almost surely, 2^70231660 is an apocalyptic number.

It is an amenable number.

70231660 is an abundant number, since it is smaller than the sum of its proper divisors (77415140).

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

70231660 is a wasteful number, since it uses less digits than its factorization.

70231660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3825 (or 3823 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 25.

The square root of 70231660 is about 8380.4331630292. The cubic root of 70231660 is about 412.5826660158.

Adding to 70231660 its reverse (6613207), we get a palindrome (76844867).

The spelling of 70231660 in words is "seventy million, two hundred thirty-one thousand, six hundred sixty".