660531014 has 24 divisors (see below), whose sum is σ = 1172836560. Its totient is φ = 277144560.

The previous prime is 660531013. The next prime is 660531017. The reversal of 660531014 is 410135066.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (660531013) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 101834 + ... + 108125.

It is an arithmetic number, because the mean of its divisors is an integer number (48868190).

Almost surely, 2^660531014 is an apocalyptic number.

660531014 is a deficient number, since it is larger than the sum of its proper divisors (512305546).

660531014 is a wasteful number, since it uses less digits than its factorization.

660531014 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209996 (or 209985 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 660531014 is about 25700.7979253563. The cubic root of 660531014 is about 870.8922075309.

The spelling of 660531014 in words is "six hundred sixty million, five hundred thirty-one thousand, fourteen".