137774797 has 2 divisors, whose sum is σ = 137774798. Its totient is φ = 137774796.

The previous prime is 137774789. The next prime is 137774821. The reversal of 137774797 is 797477731.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 136562596 + 1212201 = 11686^2 + 1101^2 .

It is a cyclic number.

It is not a de Polignac number, because 137774797 - 2³ = 137774789 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (137774597) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68887398 + 68887399.

It is an arithmetic number, because the mean of its divisors is an integer number (68887399).

Almost surely, 2^137774797 is an apocalyptic number.

It is an amenable number.

137774797 is a deficient number, since it is larger than the sum of its proper divisors (1).

137774797 is an equidigital number, since it uses as much as digits as its factorization.

137774797 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1815156, while the sum is 52.

The square root of 137774797 is about 11737.7509344849. The cubic root of 137774797 is about 516.4836682935.

The spelling of 137774797 in words is "one hundred thirty-seven million, seven hundred seventy-four thousand, seven hundred ninety-seven".