676932661 has 4 divisors (see below), whose sum is σ = 681244492. Its totient is φ = 672620832.

The previous prime is 676932637. The next prime is 676932667. The reversal of 676932661 is 166239676.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 234671761 + 442260900 = 15319^2 + 21030^2 .

It is a cyclic number.

It is not a de Polignac number, because 676932661 - 2⁹ = 676932149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (676932667) 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 3 ways as a sum of consecutive naturals, for example, 2155680 + ... + 2155993.

It is an arithmetic number, because the mean of its divisors is an integer number (170311123).

Almost surely, 2^676932661 is an apocalyptic number.

It is an amenable number.

676932661 is a deficient number, since it is larger than the sum of its proper divisors (4311831).

676932661 is a wasteful number, since it uses less digits than its factorization.

676932661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4311830.

The product of its digits is 489888, while the sum is 46.

The square root of 676932661 is about 26017.9296063311. The cubic root of 676932661 is about 878.0417288954.

The spelling of 676932661 in words is "six hundred seventy-six million, nine hundred thirty-two thousand, six hundred sixty-one".