137477887 has 2 divisors, whose sum is σ = 137477888. Its totient is φ = 137477886.

The previous prime is 137477869. The next prime is 137477891. The reversal of 137477887 is 788774731.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-137477887 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (137477807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68738943 + 68738944.

It is an arithmetic number, because the mean of its divisors is an integer number (68738944).

Almost surely, 2^137477887 is an apocalyptic number.

137477887 is a deficient number, since it is larger than the sum of its proper divisors (1).

137477887 is an equidigital number, since it uses as much as digits as its factorization.

137477887 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1843968, while the sum is 52.

The square root of 137477887 is about 11725.0964601576. The cubic root of 137477887 is about 516.1123873840.

The spelling of 137477887 in words is "one hundred thirty-seven million, four hundred seventy-seven thousand, eight hundred eighty-seven".