156663313 has 8 divisors (see below), whose sum is σ = 167348808. Its totient is φ = 146141184.

The previous prime is 156663289. The next prime is 156663323. The reversal of 156663313 is 313366651.

156663313 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 13454224 + 143209089 = 3668^2 + 11967^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-156663313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (156663323) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38856 + ... + 42697.

It is an arithmetic number, because the mean of its divisors is an integer number (20918601).

Almost surely, 2^156663313 is an apocalyptic number.

It is an amenable number.

156663313 is a deficient number, since it is larger than the sum of its proper divisors (10685495).

156663313 is a wasteful number, since it uses less digits than its factorization.

156663313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81683.

The product of its digits is 29160, while the sum is 34.

The square root of 156663313 is about 12516.5216014674. The cubic root of 156663313 is about 539.0831641726.

The spelling of 156663313 in words is "one hundred fifty-six million, six hundred sixty-three thousand, three hundred thirteen".