137780693 has 2 divisors, whose sum is σ = 137780694. Its totient is φ = 137780692.

The previous prime is 137780627. The next prime is 137780707. The reversal of 137780693 is 396087731.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 137780644 + 49 = 11738^2 + 7^2 .

It is a cyclic number.

It is not a de Polignac number, because 137780693 - 2⁸ = 137780437 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (137780593) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68890346 + 68890347.

It is an arithmetic number, because the mean of its divisors is an integer number (68890347).

Almost surely, 2^137780693 is an apocalyptic number.

It is an amenable number.

137780693 is a deficient number, since it is larger than the sum of its proper divisors (1).

137780693 is an equidigital number, since it uses as much as digits as its factorization.

137780693 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 190512, while the sum is 44.

The square root of 137780693 is about 11738.0020872378. The cubic root of 137780693 is about 516.4910357374.

The spelling of 137780693 in words is "one hundred thirty-seven million, seven hundred eighty thousand, six hundred ninety-three".