676176721 has 8 divisors (see below), whose sum is σ = 746985600. Its totient is φ = 606924240.

The previous prime is 676176713. The next prime is 676176737. The reversal of 676176721 is 127671676.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 676176721 - 2³ = 676176713 is a prime.

It is a super-3 number, since 3×676176721³ (a number of 27 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (676176791) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 388186 + ... + 389923.

It is an arithmetic number, because the mean of its divisors is an integer number (93373200).

Almost surely, 2^676176721 is an apocalyptic number.

It is an amenable number.

676176721 is a deficient number, since it is larger than the sum of its proper divisors (70808879).

676176721 is a wasteful number, since it uses less digits than its factorization.

676176721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 778199.

The product of its digits is 148176, while the sum is 43.

The square root of 676176721 is about 26003.3982586892. The cubic root of 676176721 is about 877.7147667380.

The spelling of 676176721 in words is "six hundred seventy-six million, one hundred seventy-six thousand, seven hundred twenty-one".