158669664 has 48 divisors (see below), whose sum is σ = 422392320. Its totient is φ = 52142720.

The previous prime is 158669659. The next prime is 158669677. The reversal of 158669664 is 466966851.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4824 + ... + 18455.

It is an arithmetic number, because the mean of its divisors is an integer number (8799840).

Almost surely, 2^158669664 is an apocalyptic number.

It is an amenable number.

158669664 is an abundant number, since it is smaller than the sum of its proper divisors (263722656).

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

158669664 is a wasteful number, since it uses less digits than its factorization.

158669664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23363 (or 23355 counting only the distinct ones).

The product of its digits is 1866240, while the sum is 51.

The square root of 158669664 is about 12596.4147280089. The cubic root of 158669664 is about 541.3747140640.

The spelling of 158669664 in words is "one hundred fifty-eight million, six hundred sixty-nine thousand, six hundred sixty-four".