66427292 has 18 divisors (see below), whose sum is σ = 118211184. Its totient is φ = 32661840.

The previous prime is 66427271. The next prime is 66427297. The reversal of 66427292 is 29272466.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66427297) 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, 12653 + ... + 17115.

It is an arithmetic number, because the mean of its divisors is an integer number (6567288).

Almost surely, 2^66427292 is an apocalyptic number.

It is an amenable number.

66427292 is a deficient number, since it is larger than the sum of its proper divisors (51783892).

66427292 is a wasteful number, since it uses less digits than its factorization.

66427292 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4589 (or 4526 counting only the distinct ones).

The product of its digits is 72576, while the sum is 38.

The square root of 66427292 is about 8150.2939824279. The cubic root of 66427292 is about 404.9942426657.

The spelling of 66427292 in words is "sixty-six million, four hundred twenty-seven thousand, two hundred ninety-two".