156868761 has 8 divisors (see below), whose sum is σ = 239038144. Its totient is φ = 89639280.

The previous prime is 156868753. The next prime is 156868771. The reversal of 156868761 is 167868651.

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

It is not a de Polignac number, because 156868761 - 2³ = 156868753 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 156868761.

It is not an unprimeable number, because it can be changed into a prime (156868771) 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, 3734950 + ... + 3734991.

It is an arithmetic number, because the mean of its divisors is an integer number (29879768).

Almost surely, 2^156868761 is an apocalyptic number.

It is an amenable number.

156868761 is a deficient number, since it is larger than the sum of its proper divisors (82169383).

156868761 is an equidigital number, since it uses as much as digits as its factorization.

156868761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7469951.

The product of its digits is 483840, while the sum is 48.

The square root of 156868761 is about 12524.7259850266. The cubic root of 156868761 is about 539.3187121492.

The spelling of 156868761 in words is "one hundred fifty-six million, eight hundred sixty-eight thousand, seven hundred sixty-one".