66751292 has 12 divisors (see below), whose sum is σ = 117017880. Its totient is φ = 33317616.

The previous prime is 66751261. The next prime is 66751303. The reversal of 66751292 is 29215766.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11867 + ... + 16562.

It is an arithmetic number, because the mean of its divisors is an integer number (9751490).

Almost surely, 2^66751292 is an apocalyptic number.

It is an amenable number.

66751292 is a deficient number, since it is larger than the sum of its proper divisors (50266588).

66751292 is a wasteful number, since it uses less digits than its factorization.

66751292 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29020 (or 29018 counting only the distinct ones).

The product of its digits is 45360, while the sum is 38.

The square root of 66751292 is about 8170.1463879174. The cubic root of 66751292 is about 405.6516299509.

The spelling of 66751292 in words is "sixty-six million, seven hundred fifty-one thousand, two hundred ninety-two".