676721507 has 32 divisors (see below), whose sum is σ = 874099200. Its totient is φ = 519251040.

The previous prime is 676721483. The next prime is 676721509. The reversal of 676721507 is 705127676.

It is not a de Polignac number, because 676721507 - 2¹² = 676717411 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (676721509) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 251453 + ... + 254129.

It is an arithmetic number, because the mean of its divisors is an integer number (27315600).

Almost surely, 2^676721507 is an apocalyptic number.

676721507 is a gapful number since it is divisible by the number (67) formed by its first and last digit.

676721507 is a deficient number, since it is larger than the sum of its proper divisors (197377693).

676721507 is a wasteful number, since it uses less digits than its factorization.

676721507 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2776 (or 2762 counting only the distinct ones).

The product of its (nonzero) digits is 123480, while the sum is 41.

The square root of 676721507 is about 26013.8714342944. The cubic root of 676721507 is about 877.9504242430.

The spelling of 676721507 in words is "six hundred seventy-six million, seven hundred twenty-one thousand, five hundred seven".