66157032 has 32 divisors (see below), whose sum is σ = 165600000. Its totient is φ = 22024704.

The previous prime is 66156989. The next prime is 66157051. The reversal of 66157032 is 23075166.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28873 + ... + 31079.

It is an arithmetic number, because the mean of its divisors is an integer number (5175000).

Almost surely, 2^66157032 is an apocalyptic number.

It is an amenable number.

66157032 is an abundant number, since it is smaller than the sum of its proper divisors (99442968).

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

66157032 is a wasteful number, since it uses less digits than its factorization.

66157032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3465 (or 3461 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 30.

The square root of 66157032 is about 8133.6973142600. The cubic root of 66157032 is about 404.4442552786. Note that the first 3 decimals are identical.

The spelling of 66157032 in words is "sixty-six million, one hundred fifty-seven thousand, thirty-two".