670512520 has 64 divisors (see below), whose sum is σ = 1558699200. Its totient is φ = 259395840.

The previous prime is 670512517. The next prime is 670512523. The reversal of 670512520 is 25215076.

It is an interprime number because it is at equal distance from previous prime (670512517) and next prime (670512523).

It is not an unprimeable number, because it can be changed into a prime (670512523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 263655 + ... + 266185.

It is an arithmetic number, because the mean of its divisors is an integer number (24354675).

Almost surely, 2^670512520 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 670512520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (779349600).

670512520 is an abundant number, since it is smaller than the sum of its proper divisors (888186680).

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

670512520 is a wasteful number, since it uses less digits than its factorization.

670512520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2758 (or 2754 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 28.

The square root of 670512520 is about 25894.2565060285. The cubic root of 670512520 is about 875.2570760280.

Adding to 670512520 its reverse (25215076), we get a palindrome (695727596).

The spelling of 670512520 in words is "six hundred seventy million, five hundred twelve thousand, five hundred twenty".