158769664 has 120 divisors (see below), whose sum is σ = 358029540. Its totient is φ = 70189056.

The previous prime is 158769629. The next prime is 158769679. The reversal of 158769664 is 466967851.

It can be written as a sum of positive squares in 6 ways, for example, as 149035264 + 9734400 = 12208^2 + 3120^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4291054 + ... + 4291090.

Almost surely, 2^158769664 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 158769664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (179014770).

158769664 is an abundant number, since it is smaller than the sum of its proper divisors (199259876).

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

158769664 is an equidigital number, since it uses as much as digits as its factorization.

158769664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118 (or 85 counting only the distinct ones).

The product of its digits is 2177280, while the sum is 52.

The square root of 158769664 is about 12600.3834862277. The cubic root of 158769664 is about 541.4884222147.

The spelling of 158769664 in words is "one hundred fifty-eight million, seven hundred sixty-nine thousand, six hundred sixty-four".