158856623 has 4 divisors (see below), whose sum is σ = 159367728. Its totient is φ = 158345520.

The previous prime is 158856611. The next prime is 158856629. The reversal of 158856623 is 326658851.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 326658851 = 1427 ⋅228913.

It is a cyclic number.

It is not a de Polignac number, because 158856623 - 2⁶ = 158856559 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (158856629) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 255086 + ... + 255707.

It is an arithmetic number, because the mean of its divisors is an integer number (39841932).

Almost surely, 2^158856623 is an apocalyptic number.

158856623 is a deficient number, since it is larger than the sum of its proper divisors (511105).

158856623 is an equidigital number, since it uses as much as digits as its factorization.

158856623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 511104.

The product of its digits is 345600, while the sum is 44.

The square root of 158856623 is about 12603.8336628186. The cubic root of 158856623 is about 541.5872628800.

The spelling of 158856623 in words is "one hundred fifty-eight million, eight hundred fifty-six thousand, six hundred twenty-three".