674504820 has 432 divisors, whose sum is σ = 2472497664. Its totient is φ = 153964800.

The previous prime is 674504819. The next prime is 674504833. The reversal of 674504820 is 28405476.

674504820 is a `hidden beast` number, since 6 + 74 + 504 + 82 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 18229842 + ... + 18229878.

Almost surely, 2^674504820 is an apocalyptic number.

674504820 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 674504820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1236248832).

674504820 is an abundant number, since it is smaller than the sum of its proper divisors (1797992844).

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

674504820 is a wasteful number, since it uses less digits than its factorization.

674504820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114 (or 89 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 36.

The square root of 674504820 is about 25971.2306215936. The cubic root of 674504820 is about 876.9907630473.

The spelling of 674504820 in words is "six hundred seventy-four million, five hundred four thousand, eight hundred twenty".