66157692 has 24 divisors (see below), whose sum is σ = 154503552. Its totient is φ = 22033200.

The previous prime is 66157687. The next prime is 66157697. The reversal of 66157692 is 29675166.

It is an interprime number because it is at equal distance from previous prime (66157687) and next prime (66157697).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66157697) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20467 + ... + 23477.

It is an arithmetic number, because the mean of its divisors is an integer number (6437648).

Almost surely, 2^66157692 is an apocalyptic number.

It is an amenable number.

66157692 is an abundant number, since it is smaller than the sum of its proper divisors (88345860).

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

66157692 is a wasteful number, since it uses less digits than its factorization.

66157692 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4849 (or 4847 counting only the distinct ones).

The product of its digits is 136080, while the sum is 42.

The square root of 66157692 is about 8133.7378861136. The cubic root of 66157692 is about 404.4456002217.

The spelling of 66157692 in words is "sixty-six million, one hundred fifty-seven thousand, six hundred ninety-two".