676450391579 has 4 divisors (see below), whose sum is σ = 678388645200. Its totient is φ = 674512137960.

The previous prime is 676450391521. The next prime is 676450391657. The reversal of 676450391579 is 975193054676.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-676450391579 is a prime.

It is a super-2 number, since 2×676450391579² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (676450391509) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 969126287 + ... + 969126984.

It is an arithmetic number, because the mean of its divisors is an integer number (169597161300).

Almost surely, 2^676450391579 is an apocalyptic number.

676450391579 is a deficient number, since it is larger than the sum of its proper divisors (1938253621).

676450391579 is a wasteful number, since it uses less digits than its factorization.

676450391579 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1938253620.

The product of its (nonzero) digits is 42865200, while the sum is 62.

The spelling of 676450391579 in words is "six hundred seventy-six billion, four hundred fifty million, three hundred ninety-one thousand, five hundred seventy-nine".