670023520 has 24 divisors (see below), whose sum is σ = 1582930944. Its totient is φ = 268009344.

The previous prime is 670023503. The next prime is 670023527. The reversal of 670023520 is 25320076.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (670023527) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2093664 + ... + 2093983.

It is an arithmetic number, because the mean of its divisors is an integer number (65955456).

Almost surely, 2^670023520 is an apocalyptic number.

It is an amenable number.

670023520 is an abundant number, since it is smaller than the sum of its proper divisors (912907424).

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

670023520 is a wasteful number, since it uses less digits than its factorization.

670023520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4187662 (or 4187654 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 25.

The square root of 670023520 is about 25884.8125355391. The cubic root of 670023520 is about 875.0442513675.

Adding to 670023520 its reverse (25320076), we get a palindrome (695343596).

The spelling of 670023520 in words is "six hundred seventy million, twenty-three thousand, five hundred twenty".