660158213 has 48 divisors (see below), whose sum is σ = 830124288. Its totient is φ = 520396800.

The previous prime is 660158203. The next prime is 660158243. The reversal of 660158213 is 312851066.

It is a happy number.

660158213 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 660158213 - 2⁴ = 660158197 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 660158213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (660158203) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2568581 + ... + 2568837.

It is an arithmetic number, because the mean of its divisors is an integer number (17294256).

Almost surely, 2^660158213 is an apocalyptic number.

It is an amenable number.

660158213 is a deficient number, since it is larger than the sum of its proper divisors (169966075).

660158213 is a wasteful number, since it uses less digits than its factorization.

660158213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 386 (or 375 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 660158213 is about 25693.5441891538. The cubic root of 660158213 is about 870.7283340317.

The spelling of 660158213 in words is "six hundred sixty million, one hundred fifty-eight thousand, two hundred thirteen".