670700520 has 256 divisors, whose sum is σ = 2589696000. Its totient is φ = 151227648.

The previous prime is 670700483. The next prime is 670700521. The reversal of 670700520 is 25007076.

670700520 is a `hidden beast` number, since 6 + 70 + 70 + 0 + 520 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (670700521) 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 63 ways as a sum of consecutive naturals, for example, 596679 + ... + 597801.

It is an arithmetic number, because the mean of its divisors is an integer number (10116000).

Almost surely, 2^670700520 is an apocalyptic number.

670700520 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 670700520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1294848000).

670700520 is an abundant number, since it is smaller than the sum of its proper divisors (1918995480).

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

670700520 is a wasteful number, since it uses less digits than its factorization.

670700520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1229 (or 1219 counting only the distinct ones).

The product of its (nonzero) digits is 2940, while the sum is 27.

The square root of 670700520 is about 25897.8864002451. The cubic root of 670700520 is about 875.3388706497.

Adding to 670700520 its reverse (25007076), we get a palindrome (695707596).

The spelling of 670700520 in words is "six hundred seventy million, seven hundred thousand, five hundred twenty".