66797394 has 16 divisors (see below), whose sum is σ = 133866432. Its totient is φ = 22220528.

The previous prime is 66797371. The next prime is 66797413. The reversal of 66797394 is 49379766.

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, 8049 + ... + 14084.

It is an arithmetic number, because the mean of its divisors is an integer number (8366652).

Almost surely, 2^66797394 is an apocalyptic number.

66797394 is an abundant number, since it is smaller than the sum of its proper divisors (67069038).

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

66797394 is a wasteful number, since it uses less digits than its factorization.

66797394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22641.

The product of its digits is 1714608, while the sum is 51.

The square root of 66797394 is about 8172.9672702147. The cubic root of 66797394 is about 405.7449966716.

The spelling of 66797394 in words is "sixty-six million, seven hundred ninety-seven thousand, three hundred ninety-four".