66724610 has 16 divisors (see below), whose sum is σ = 125326656. Its totient is φ = 25529328.

The previous prime is 66724601. The next prime is 66724639. The reversal of 66724610 is 1642766.

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, 144824 + ... + 145283.

It is an arithmetic number, because the mean of its divisors is an integer number (7832916).

Almost surely, 2^66724610 is an apocalyptic number.

66724610 is a deficient number, since it is larger than the sum of its proper divisors (58602046).

66724610 is a wasteful number, since it uses less digits than its factorization.

66724610 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 290137.

The product of its (nonzero) digits is 12096, while the sum is 32.

The square root of 66724610 is about 8168.5133286296. The cubic root of 66724610 is about 405.5975733729.

The spelling of 66724610 in words is "sixty-six million, seven hundred twenty-four thousand, six hundred ten".