676657660 has 36 divisors (see below), whose sum is σ = 1652980392. Its totient is φ = 231996576.

The previous prime is 676657649. The next prime is 676657661. The reversal of 676657660 is 66756676.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (676657661) 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 11 ways as a sum of consecutive naturals, for example, 344254 + ... + 346213.

It is an arithmetic number, because the mean of its divisors is an integer number (45916122).

Almost surely, 2^676657660 is an apocalyptic number.

It is an amenable number.

676657660 is an abundant number, since it is smaller than the sum of its proper divisors (976322732).

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

676657660 is a wasteful number, since it uses less digits than its factorization.

676657660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 690490 (or 690481 counting only the distinct ones).

The product of its (nonzero) digits is 1905120, while the sum is 49.

The square root of 676657660 is about 26012.6442331417. The cubic root of 676657660 is about 877.9228125578.

The spelling of 676657660 in words is "six hundred seventy-six million, six hundred fifty-seven thousand, six hundred sixty".