660307970 has 16 divisors (see below), whose sum is σ = 1358347968. Its totient is φ = 226391280.

The previous prime is 660307961. The next prime is 660307979. The reversal of 660307970 is 79703066.

It is an interprime number because it is at equal distance from previous prime (660307961) and next prime (660307979).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (660307979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4716416 + ... + 4716555.

It is an arithmetic number, because the mean of its divisors is an integer number (84896748).

Almost surely, 2^660307970 is an apocalyptic number.

660307970 is an abundant number, since it is smaller than the sum of its proper divisors (698039998).

660307970 is a wasteful number, since it uses less digits than its factorization.

660307970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9432985.

The product of its (nonzero) digits is 47628, while the sum is 38.

The square root of 660307970 is about 25696.4583162739. The cubic root of 660307970 is about 870.7941706759.

The spelling of 660307970 in words is "six hundred sixty million, three hundred seven thousand, nine hundred seventy".