674761189 has 6 divisors (see below), whose sum is σ = 705374726. Its totient is φ = 645423240.

The previous prime is 674761181. The next prime is 674761211. The reversal of 674761189 is 981167476.

It can be written as a sum of positive squares in only one way, i.e., 674285089 + 476100 = 25967^2 + 690^2 .

It is not a de Polignac number, because 674761189 - 2³ = 674761181 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 (674761181) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 637242 + ... + 638299.

Almost surely, 2^674761189 is an apocalyptic number.

It is an amenable number.

674761189 is a deficient number, since it is larger than the sum of its proper divisors (30613537).

674761189 is a wasteful number, since it uses less digits than its factorization.

674761189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1275587 (or 1275564 counting only the distinct ones).

The product of its digits is 508032, while the sum is 49.

The square root of 674761189 is about 25976.1657871211. The cubic root of 674761189 is about 877.1018592466.

The spelling of 674761189 in words is "six hundred seventy-four million, seven hundred sixty-one thousand, one hundred eighty-nine".