670436424 has 144 divisors (see below), whose sum is σ = 2122520400. Its totient is φ = 190620864.

The previous prime is 670436419. The next prime is 670436477. The reversal of 670436424 is 424634076.

670436424 is a `hidden beast` number, since 6 + 7 + 0 + 4 + 3 + 642 + 4 = 666.

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

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1082787 + ... + 1083405.

It is an arithmetic number, because the mean of its divisors is an integer number (14739725).

Almost surely, 2^670436424 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 670436424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1061260200).

670436424 is an abundant number, since it is smaller than the sum of its proper divisors (1452083976).

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

670436424 is a wasteful number, since it uses less digits than its factorization.

670436424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 952 (or 938 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 36.

The square root of 670436424 is about 25892.7871037476. The cubic root of 670436424 is about 875.2239640029.

The spelling of 670436424 in words is "six hundred seventy million, four hundred thirty-six thousand, four hundred twenty-four".