137004691 has 2 divisors, whose sum is σ = 137004692. Its totient is φ = 137004690.

The previous prime is 137004689. The next prime is 137004701. The reversal of 137004691 is 196400731.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 137004691 - 2¹ = 137004689 is a prime.

Together with 137004689, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (137008691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68502345 + 68502346.

It is an arithmetic number, because the mean of its divisors is an integer number (68502346).

Almost surely, 2^137004691 is an apocalyptic number.

137004691 is a deficient number, since it is larger than the sum of its proper divisors (1).

137004691 is an equidigital number, since it uses as much as digits as its factorization.

137004691 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4536, while the sum is 31.

The square root of 137004691 is about 11704.9002985929. The cubic root of 137004691 is about 515.5195573603.

The spelling of 137004691 in words is "one hundred thirty-seven million, four thousand, six hundred ninety-one".