156340660 has 72 divisors (see below), whose sum is σ = 392426496. Its totient is φ = 51247680.

The previous prime is 156340649. The next prime is 156340663. The reversal of 156340660 is 66043651.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (156340663) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 73005 + ... + 75115.

It is an arithmetic number, because the mean of its divisors is an integer number (5450368).

Almost surely, 2^156340660 is an apocalyptic number.

156340660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 156340660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (196213248).

156340660 is an abundant number, since it is smaller than the sum of its proper divisors (236085836).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

156340660 is a wasteful number, since it uses less digits than its factorization.

156340660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2173 (or 2148 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 156340660 is about 12503.6258741215. The cubic root of 156340660 is about 538.7128235930.

The spelling of 156340660 in words is "one hundred fifty-six million, three hundred forty thousand, six hundred sixty".