158623687 has 2 divisors, whose sum is σ = 158623688. Its totient is φ = 158623686.

The previous prime is 158623643. The next prime is 158623693. The reversal of 158623687 is 786326851.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-158623687 is a prime.

It is a super-2 number, since 2×158623687² = 50322948154947938, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (158623627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79311843 + 79311844.

It is an arithmetic number, because the mean of its divisors is an integer number (79311844).

Almost surely, 2^158623687 is an apocalyptic number.

158623687 is a deficient number, since it is larger than the sum of its proper divisors (1).

158623687 is an equidigital number, since it uses as much as digits as its factorization.

158623687 is an evil number, because the sum of its binary digits is even.

The product of its digits is 483840, while the sum is 46.

The square root of 158623687 is about 12594.5895923607. The cubic root of 158623687 is about 541.3224184348.

The spelling of 158623687 in words is "one hundred fifty-eight million, six hundred twenty-three thousand, six hundred eighty-seven".