137900717 has 2 divisors, whose sum is σ = 137900718. Its totient is φ = 137900716.

The previous prime is 137900683. The next prime is 137900731. The reversal of 137900717 is 717009731.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 133494916 + 4405801 = 11554^2 + 2099^2 .

It is a cyclic number.

It is not a de Polignac number, because 137900717 - 2¹² = 137896621 is a prime.

It is a super-2 number, since 2×137900717² = 38033215498228178, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (137900767) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68950358 + 68950359.

It is an arithmetic number, because the mean of its divisors is an integer number (68950359).

Almost surely, 2^137900717 is an apocalyptic number.

It is an amenable number.

137900717 is a deficient number, since it is larger than the sum of its proper divisors (1).

137900717 is an equidigital number, since it uses as much as digits as its factorization.

137900717 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9261, while the sum is 35.

The square root of 137900717 is about 11743.1135990418. The cubic root of 137900717 is about 516.6409680362.

The spelling of 137900717 in words is "one hundred thirty-seven million, nine hundred thousand, seven hundred seventeen".