137066749 has 2 divisors, whose sum is σ = 137066750. Its totient is φ = 137066748.

The previous prime is 137066701. The next prime is 137066807. The reversal of 137066749 is 947660731.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 89208025 + 47858724 = 9445^2 + 6918^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-137066749 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (137066249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68533374 + 68533375.

It is an arithmetic number, because the mean of its divisors is an integer number (68533375).

Almost surely, 2^137066749 is an apocalyptic number.

It is an amenable number.

137066749 is a deficient number, since it is larger than the sum of its proper divisors (1).

137066749 is an equidigital number, since it uses as much as digits as its factorization.

137066749 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 190512, while the sum is 43.

The square root of 137066749 is about 11707.5509394578. The cubic root of 137066749 is about 515.5973826359.

The spelling of 137066749 in words is "one hundred thirty-seven million, sixty-six thousand, seven hundred forty-nine".