137986633 has 2 divisors, whose sum is σ = 137986634. Its totient is φ = 137986632.

The previous prime is 137986631. The next prime is 137986661. The reversal of 137986633 is 336689731.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 132641289 + 5345344 = 11517^2 + 2312^2 .

It is a cyclic number.

It is not a de Polignac number, because 137986633 - 2¹ = 137986631 is a prime.

Together with 137986631, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (137986631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68993316 + 68993317.

It is an arithmetic number, because the mean of its divisors is an integer number (68993317).

Almost surely, 2^137986633 is an apocalyptic number.

It is an amenable number.

137986633 is a deficient number, since it is larger than the sum of its proper divisors (1).

137986633 is an equidigital number, since it uses as much as digits as its factorization.

137986633 is an evil number, because the sum of its binary digits is even.

The product of its digits is 489888, while the sum is 46.

The square root of 137986633 is about 11746.7711733906. The cubic root of 137986633 is about 516.7482396813.

The spelling of 137986633 in words is "one hundred thirty-seven million, nine hundred eighty-six thousand, six hundred thirty-three".