66748192 has 36 divisors (see below), whose sum is σ = 152868870. Its totient is φ = 28605696.

The previous prime is 66748183. The next prime is 66748193. The reversal of 66748192 is 29184766.

It can be written as a sum of positive squares in only one way, i.e., 58430736 + 8317456 = 7644^2 + 2884^2 .

It is a super-2 number, since 2×66748192² = 8910642270537728, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (66748193) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 19717 + ... + 22852.

Almost surely, 2^66748192 is an apocalyptic number.

It is an amenable number.

66748192 is an abundant number, since it is smaller than the sum of its proper divisors (86120678).

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

66748192 is a wasteful number, since it uses less digits than its factorization.

66748192 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42593 (or 42578 counting only the distinct ones).

The product of its digits is 145152, while the sum is 43.

The square root of 66748192 is about 8169.9566706317. The cubic root of 66748192 is about 405.6453502246.

The spelling of 66748192 in words is "sixty-six million, seven hundred forty-eight thousand, one hundred ninety-two".