66662898 has 16 divisors (see below), whose sum is σ = 134222400. Its totient is φ = 22071536.

The previous prime is 66662837. The next prime is 66662941. The reversal of 66662898 is 89826666.

It is a self number, because there is not a number n which added to its sum of digits gives 66662898.

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, 36390 + ... + 38177.

It is an arithmetic number, because the mean of its divisors is an integer number (8388900).

Almost surely, 2^66662898 is an apocalyptic number.

66662898 is an abundant number, since it is smaller than the sum of its proper divisors (67559502).

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

66662898 is a wasteful number, since it uses less digits than its factorization.

66662898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74721.

The product of its digits is 1492992, while the sum is 51.

The square root of 66662898 is about 8164.7350232570. The cubic root of 66662898 is about 405.4724922969.

The spelling of 66662898 in words is "sixty-six million, six hundred sixty-two thousand, eight hundred ninety-eight".