66724410 has 16 divisors (see below), whose sum is σ = 160138656. Its totient is φ = 17793168.

The previous prime is 66724397. The next prime is 66724421. The reversal of 66724410 is 1442766.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 2224147 = 66724410 / (6 + 6 + 7 + 2 + 4 + 4 + 1 + 0).

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, 1112044 + ... + 1112103.

It is an arithmetic number, because the mean of its divisors is an integer number (10008666).

Almost surely, 2^66724410 is an apocalyptic number.

66724410 is an abundant number, since it is smaller than the sum of its proper divisors (93414246).

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

66724410 is a wasteful number, since it uses less digits than its factorization.

66724410 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2224157.

The product of its (nonzero) digits is 8064, while the sum is 30.

The square root of 66724410 is about 8168.5010864907. The cubic root of 66724410 is about 405.5971681272.

The spelling of 66724410 in words is "sixty-six million, seven hundred twenty-four thousand, four hundred ten".