623877887 has 2 divisors, whose sum is σ = 623877888. Its totient is φ = 623877886.

The previous prime is 623877869. The next prime is 623877911. The reversal of 623877887 is 788778326.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-623877887 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (623877827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 311938943 + 311938944.

It is an arithmetic number, because the mean of its divisors is an integer number (311938944).

Almost surely, 2^623877887 is an apocalyptic number.

623877887 is a deficient number, since it is larger than the sum of its proper divisors (1).

623877887 is an equidigital number, since it uses as much as digits as its factorization.

623877887 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6322176, while the sum is 56.

The square root of 623877887 is about 24977.5476578466. The cubic root of 623877887 is about 854.4759904841.

The spelling of 623877887 in words is "six hundred twenty-three million, eight hundred seventy-seven thousand, eight hundred eighty-seven".