66800898 has 24 divisors (see below), whose sum is σ = 145782000. Its totient is φ = 22105944.

The previous prime is 66800869. The next prime is 66800963. The reversal of 66800898 is 89800866.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10848 + ... + 15851.

It is an arithmetic number, because the mean of its divisors is an integer number (6074250).

Almost surely, 2^66800898 is an apocalyptic number.

66800898 is an abundant number, since it is smaller than the sum of its proper divisors (78981102).

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

66800898 is a wasteful number, since it uses less digits than its factorization.

66800898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26846 (or 26843 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 45.

The square root of 66800898 is about 8173.1816326324. The cubic root of 66800898 is about 405.7520912877.

The spelling of 66800898 in words is "sixty-six million, eight hundred thousand, eight hundred ninety-eight".