137655863 has 2 divisors, whose sum is σ = 137655864. Its totient is φ = 137655862.

The previous prime is 137655853. The next prime is 137655887. The reversal of 137655863 is 368556731.

137655863 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is an emirp because it is prime and its reverse (368556731) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-137655863 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (137655823) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68827931 + 68827932.

It is an arithmetic number, because the mean of its divisors is an integer number (68827932).

Almost surely, 2^137655863 is an apocalyptic number.

137655863 is a deficient number, since it is larger than the sum of its proper divisors (1).

137655863 is an equidigital number, since it uses as much as digits as its factorization.

137655863 is an evil number, because the sum of its binary digits is even.

The product of its digits is 453600, while the sum is 44.

The square root of 137655863 is about 11732.6835378783. The cubic root of 137655863 is about 516.3350074494.

The spelling of 137655863 in words is "one hundred thirty-seven million, six hundred fifty-five thousand, eight hundred sixty-three".