1670568520 has 16 divisors (see below), whose sum is σ = 3758779260. Its totient is φ = 668227392.

The previous prime is 1670568479. The next prime is 1670568551. The reversal of 1670568520 is 258650761.

It can be written as a sum of positive squares in 2 ways, for example, as 1626186276 + 44382244 = 40326^2 + 6662^2 .

It is a Harshad number since it is a multiple of its sum of digits (40), and also a Moran number because the ratio is a prime number: 41764213 = 1670568520 / (1 + 6 + 7 + 0 + 5 + 6 + 8 + 5 + 2 + 0).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20882067 + ... + 20882146.

Almost surely, 2^1670568520 is an apocalyptic number.

1670568520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1670568520 is an abundant number, since it is smaller than the sum of its proper divisors (2088210740).

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

1670568520 is a wasteful number, since it uses less digits than its factorization.

1670568520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41764224 (or 41764220 counting only the distinct ones).

The product of its (nonzero) digits is 100800, while the sum is 40.

The square root of 1670568520 is about 40872.5888585492. The cubic root of 1670568520 is about 1186.5556121437. Note that the first 3 decimals are identical.

The spelling of 1670568520 in words is "one billion, six hundred seventy million, five hundred sixty-eight thousand, five hundred twenty".