674238864 has 320 divisors, whose sum is σ = 2137363200. Its totient is φ = 181149696.

The previous prime is 674238863. The next prime is 674238913. The reversal of 674238864 is 468832476.

It is a hoax number, since the sum of its digits (48) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (674238863) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 12721462 + ... + 12721514.

It is an arithmetic number, because the mean of its divisors is an integer number (6679260).

Almost surely, 2^674238864 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 674238864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1068681600).

674238864 is an abundant number, since it is smaller than the sum of its proper divisors (1463124336).

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

674238864 is a wasteful number, since it uses less digits than its factorization.

674238864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162 (or 156 counting only the distinct ones).

The product of its digits is 1548288, while the sum is 48.

The square root of 674238864 is about 25966.1099127305. The cubic root of 674238864 is about 876.8754826171.

The spelling of 674238864 in words is "six hundred seventy-four million, two hundred thirty-eight thousand, eight hundred sixty-four".