156465666 has 48 divisors (see below), whose sum is σ = 388924224. Its totient is φ = 44533152.

The previous prime is 156465653. The next prime is 156465697. The reversal of 156465666 is 666564651.

156465666 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 32661 + ... + 37143.

It is an arithmetic number, because the mean of its divisors is an integer number (8102588).

Almost surely, 2^156465666 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 156465666, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (194462112).

156465666 is an abundant number, since it is smaller than the sum of its proper divisors (232458558).

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

156465666 is a wasteful number, since it uses less digits than its factorization.

156465666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4775 (or 4772 counting only the distinct ones).

The product of its digits is 777600, while the sum is 45.

The square root of 156465666 is about 12508.6236652959. The cubic root of 156465666 is about 538.8563656820.

It can be divided in two parts, 15646 and 5666, that added together give a palindrome (21312).

The spelling of 156465666 in words is "one hundred fifty-six million, four hundred sixty-five thousand, six hundred sixty-six".