660622098898 has 4 divisors (see below), whose sum is σ = 990933148350. Its totient is φ = 330311049448.

The previous prime is 660622098887. The next prime is 660622098923. The reversal of 660622098898 is 898890226066.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 646395096169 + 14227002729 = 803987^2 + 119277^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 165155524723 + ... + 165155524726.

Almost surely, 2^660622098898 is an apocalyptic number.

660622098898 is a deficient number, since it is larger than the sum of its proper divisors (330311049452).

660622098898 is a wasteful number, since it uses less digits than its factorization.

660622098898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 330311049451.

The product of its (nonzero) digits is 35831808, while the sum is 64.

The spelling of 660622098898 in words is "six hundred sixty billion, six hundred twenty-two million, ninety-eight thousand, eight hundred ninety-eight".