660818352 has 40 divisors (see below), whose sum is σ = 1708868800. Its totient is φ = 220046400.

The previous prime is 660818329. The next prime is 660818357. The reversal of 660818352 is 253818066.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 660818352.

It is not an unprimeable number, because it can be changed into a prime (660818357) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43899 + ... + 56997.

It is an arithmetic number, because the mean of its divisors is an integer number (42721720).

Almost surely, 2^660818352 is an apocalyptic number.

It is an amenable number.

660818352 is an abundant number, since it is smaller than the sum of its proper divisors (1048050448).

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

660818352 is a wasteful number, since it uses less digits than its factorization.

660818352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14161 (or 14155 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 39.

The square root of 660818352 is about 25706.3873774593. The cubic root of 660818352 is about 871.0184716743.

The spelling of 660818352 in words is "six hundred sixty million, eight hundred eighteen thousand, three hundred fifty-two".