670423520 has 48 divisors (see below), whose sum is σ = 1705717440. Its totient is φ = 247540224.

The previous prime is 670423519. The next prime is 670423529. The reversal of 670423520 is 25324076.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (670423529) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 159080 + ... + 163239.

It is an arithmetic number, because the mean of its divisors is an integer number (35535780).

Almost surely, 2^670423520 is an apocalyptic number.

It is an amenable number.

670423520 is an abundant number, since it is smaller than the sum of its proper divisors (1035293920).

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

670423520 is a wasteful number, since it uses less digits than its factorization.

670423520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 322347 (or 322339 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 29.

The square root of 670423520 is about 25892.5379211849. The cubic root of 670423520 is about 875.2183487737.

Adding to 670423520 its reverse (25324076), we get a palindrome (695747596).

The spelling of 670423520 in words is "six hundred seventy million, four hundred twenty-three thousand, five hundred twenty".