674311405 has 4 divisors (see below), whose sum is σ = 809173692. Its totient is φ = 539449120.

The previous prime is 674311381. The next prime is 674311427. The reversal of 674311405 is 504113476.

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 345179241 + 329132164 = 18579^2 + 18142^2 .

It is not a de Polignac number, because 674311405 - 2²¹ = 672214253 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67431136 + ... + 67431145.

It is an arithmetic number, because the mean of its divisors is an integer number (202293423).

Almost surely, 2^674311405 is an apocalyptic number.

It is an amenable number.

674311405 is a deficient number, since it is larger than the sum of its proper divisors (134862287).

674311405 is a wasteful number, since it uses less digits than its factorization.

674311405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134862286.

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 674311405 is about 25967.5067151238. The cubic root of 674311405 is about 876.9069290113.

The spelling of 674311405 in words is "six hundred seventy-four million, three hundred eleven thousand, four hundred five".