660232137 has 8 divisors (see below), whose sum is σ = 893448736. Its totient is φ = 433585152.

The previous prime is 660232117. The next prime is 660232147. The reversal of 660232137 is 731232066.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 660232137 - 2⁶ = 660232073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (660232117) 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, 1642168 + ... + 1642569.

It is an arithmetic number, because the mean of its divisors is an integer number (111681092).

Almost surely, 2^660232137 is an apocalyptic number.

660232137 is a gapful number since it is divisible by the number (67) formed by its first and last digit.

It is an amenable number.

660232137 is a deficient number, since it is larger than the sum of its proper divisors (233216599).

660232137 is a wasteful number, since it uses less digits than its factorization.

660232137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3284807.

The product of its (nonzero) digits is 9072, while the sum is 30.

The square root of 660232137 is about 25694.9827203678. The cubic root of 660232137 is about 870.7608339777.

The spelling of 660232137 in words is "six hundred sixty million, two hundred thirty-two thousand, one hundred thirty-seven".