156670013 has 4 divisors (see below), whose sum is σ = 156726780. Its totient is φ = 156613248.

The previous prime is 156669983. The next prime is 156670037. The reversal of 156670013 is 310076651.

156670013 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 90117049 + 66552964 = 9493^2 + 8158^2 .

It is a cyclic number.

It is not a de Polignac number, because 156670013 - 2⁸ = 156669757 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (156670513) 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, 24020 + ... + 29837.

It is an arithmetic number, because the mean of its divisors is an integer number (39181695).

Almost surely, 2^156670013 is an apocalyptic number.

It is an amenable number.

156670013 is a deficient number, since it is larger than the sum of its proper divisors (56767).

156670013 is an equidigital number, since it uses as much as digits as its factorization.

156670013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56766.

The product of its (nonzero) digits is 3780, while the sum is 29.

The square root of 156670013 is about 12516.7892448503. The cubic root of 156670013 is about 539.0908490302.

The spelling of 156670013 in words is "one hundred fifty-six million, six hundred seventy thousand, thirteen".