38623687 has 2 divisors, whose sum is σ = 38623688. Its totient is φ = 38623686.

The previous prime is 38623657. The next prime is 38623703. The reversal of 38623687 is 78632683.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38623687 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38623657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19311843 + 19311844.

It is an arithmetic number, because the mean of its divisors is an integer number (19311844).

Almost surely, 2^38623687 is an apocalyptic number.

38623687 is a deficient number, since it is larger than the sum of its proper divisors (1).

38623687 is an equidigital number, since it uses as much as digits as its factorization.

38623687 is an evil number, because the sum of its binary digits is even.

The product of its digits is 290304, while the sum is 43.

The square root of 38623687 is about 6214.7958132186. The cubic root of 38623687 is about 338.0268847586.

Subtracting from 38623687 its product of digits (290304), we obtain a palindrome (38333383).

The spelling of 38623687 in words is "thirty-eight million, six hundred twenty-three thousand, six hundred eighty-seven".