156968645 has 8 divisors (see below), whose sum is σ = 190227960. Its totient is φ = 124331200.

The previous prime is 156968641. The next prime is 156968653. The reversal of 156968645 is 546869651.

It is a happy number.

156968645 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 63904036 + 93064609 = 7994^2 + 9647^2 .

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

It is not a de Polignac number, because 156968645 - 2² = 156968641 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 156968593 and 156968602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (156968641) 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, 154910 + ... + 155919.

It is an arithmetic number, because the mean of its divisors is an integer number (23778495).

Almost surely, 2^156968645 is an apocalyptic number.

It is an amenable number.

156968645 is a deficient number, since it is larger than the sum of its proper divisors (33259315).

156968645 is a wasteful number, since it uses less digits than its factorization.

156968645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310935.

The product of its digits is 1555200, while the sum is 50.

The square root of 156968645 is about 12528.7128229519. The cubic root of 156968645 is about 539.4331557568.

The spelling of 156968645 in words is "one hundred fifty-six million, nine hundred sixty-eight thousand, six hundred forty-five".