674561517 has 8 divisors (see below), whose sum is σ = 1027903296. Its totient is φ = 385463712.

The previous prime is 674561507. The next prime is 674561543. The reversal of 674561517 is 715165476.

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

It is not a de Polignac number, because 674561517 - 2¹⁶ = 674495981 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (674561507) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16060968 + ... + 16061009.

It is an arithmetic number, because the mean of its divisors is an integer number (128487912).

Almost surely, 2^674561517 is an apocalyptic number.

It is an amenable number.

674561517 is a deficient number, since it is larger than the sum of its proper divisors (353341779).

674561517 is a wasteful number, since it uses less digits than its factorization.

674561517 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32121987.

The product of its digits is 176400, while the sum is 42.

The square root of 674561517 is about 25972.3221333788. The cubic root of 674561517 is about 877.0153348274.

The spelling of 674561517 in words is "six hundred seventy-four million, five hundred sixty-one thousand, five hundred seventeen".