674249880517 has 4 divisors (see below), whose sum is σ = 690694999596. Its totient is φ = 657804761440.

The previous prime is 674249880443. The next prime is 674249880529. The reversal of 674249880517 is 715088942476.

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 109747100961 + 564502779556 = 331281^2 + 751334^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-674249880517 is a prime.

It is a super-2 number, since 2×674249880517² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (674249850517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8222559478 + ... + 8222559559.

It is an arithmetic number, because the mean of its divisors is an integer number (172673749899).

Almost surely, 2^674249880517 is an apocalyptic number.

It is an amenable number.

674249880517 is a deficient number, since it is larger than the sum of its proper divisors (16445119079).

674249880517 is a wasteful number, since it uses less digits than its factorization.

674249880517 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16445119078.

The product of its (nonzero) digits is 27095040, while the sum is 61.

The spelling of 674249880517 in words is "six hundred seventy-four billion, two hundred forty-nine million, eight hundred eighty thousand, five hundred seventeen".