66190794 has 24 divisors (see below), whose sum is σ = 139720320. Its totient is φ = 20901672.

The previous prime is 66190793. The next prime is 66190807. The reversal of 66190794 is 49709166.

It is not an unprimeable number, because it can be changed into a prime (66190793) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13114 + ... + 17445.

It is an arithmetic number, because the mean of its divisors is an integer number (5821680).

Almost surely, 2^66190794 is an apocalyptic number.

66190794 is an abundant number, since it is smaller than the sum of its proper divisors (73529526).

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

66190794 is a wasteful number, since it uses less digits than its factorization.

66190794 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30602 (or 30583 counting only the distinct ones).

The product of its (nonzero) digits is 81648, while the sum is 42.

The square root of 66190794 is about 8135.7724894444. The cubic root of 66190794 is about 404.5130437574.

The spelling of 66190794 in words is "sixty-six million, one hundred ninety thousand, seven hundred ninety-four".