674498381 has 4 divisors (see below), whose sum is σ = 676232700. Its totient is φ = 672764064.

The previous prime is 674498371. The next prime is 674498393. The reversal of 674498381 is 183894476.

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 170720356 + 503778025 = 13066^2 + 22445^2 .

It is a cyclic number.

It is not a de Polignac number, because 674498381 - 2⁶ = 674498317 is a prime.

It is a super-2 number, since 2×674498381² = 909896131943242322, which 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 (674498311) 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, 866576 + ... + 867353.

It is an arithmetic number, because the mean of its divisors is an integer number (169058175).

Almost surely, 2^674498381 is an apocalyptic number.

It is an amenable number.

674498381 is a deficient number, since it is larger than the sum of its proper divisors (1734319).

674498381 is a wasteful number, since it uses less digits than its factorization.

674498381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1734318.

The product of its digits is 1161216, while the sum is 50.

The square root of 674498381 is about 25971.1066572066. The cubic root of 674498381 is about 876.9879723771.

The spelling of 674498381 in words is "six hundred seventy-four million, four hundred ninety-eight thousand, three hundred eighty-one".