676407505 has 12 divisors (see below), whose sum is σ = 856660212. Its totient is φ = 512644320.

The previous prime is 676407443. The next prime is 676407517. The reversal of 676407505 is 505704676.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 159163456 + 517244049 = 12616^2 + 22743^2 .

It is not a de Polignac number, because 676407505 - 2⁹ = 676406993 is a prime.

It is a super-2 number, since 2×676407505² = 915054225640650050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 185566 + ... + 189175.

It is an arithmetic number, because the mean of its divisors is an integer number (71388351).

Almost surely, 2^676407505 is an apocalyptic number.

It is an amenable number.

676407505 is a deficient number, since it is larger than the sum of its proper divisors (180252707).

676407505 is a wasteful number, since it uses less digits than its factorization.

676407505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 374784 (or 374765 counting only the distinct ones).

The product of its (nonzero) digits is 176400, while the sum is 40.

The square root of 676407505 is about 26007.8354539550. The cubic root of 676407505 is about 877.8146121766.

The spelling of 676407505 in words is "six hundred seventy-six million, four hundred seven thousand, five hundred five".