674189784 has 32 divisors (see below), whose sum is σ = 1872750000. Its totient is φ = 224729856.

The previous prime is 674189779. The next prime is 674189833. The reversal of 674189784 is 487981476.

It is a happy number.

674189784 is a `hidden beast` number, since 67 + 418 + 97 + 84 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 674189784.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1560409 + ... + 1560840.

Almost surely, 2^674189784 is an apocalyptic number.

It is an amenable number.

674189784 is an abundant number, since it is smaller than the sum of its proper divisors (1198560216).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

674189784 is a wasteful number, since it uses less digits than its factorization.

674189784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3121264 (or 3121254 counting only the distinct ones).

The product of its digits is 2709504, while the sum is 54.

The square root of 674189784 is about 25965.1648175012. The cubic root of 674189784 is about 876.8542052453.

The spelling of 674189784 in words is "six hundred seventy-four million, one hundred eighty-nine thousand, seven hundred eighty-four".