660255474 has 16 divisors (see below), whose sum is σ = 1330910208. Its totient is φ = 218351952.

The previous prime is 660255439. The next prime is 660255511. The reversal of 660255474 is 474552066.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 432477 + ... + 434000.

It is an arithmetic number, because the mean of its divisors is an integer number (83181888).

Almost surely, 2^660255474 is an apocalyptic number.

660255474 is an abundant number, since it is smaller than the sum of its proper divisors (670654734).

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

660255474 is a wasteful number, since it uses less digits than its factorization.

660255474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 866609.

The product of its (nonzero) digits is 201600, while the sum is 39.

The square root of 660255474 is about 25695.4368322471. The cubic root of 660255474 is about 870.7710933522.

The spelling of 660255474 in words is "six hundred sixty million, two hundred fifty-five thousand, four hundred seventy-four".