137700709 has 4 divisors (see below), whose sum is σ = 137747104. Its totient is φ = 137654316.

The previous prime is 137700707. The next prime is 137700721. The reversal of 137700709 is 907007731.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 137700709 - 2¹ = 137700707 is a prime.

It is a super-2 number, since 2×137700709² = 37922970518205362, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (137700707) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18417 + ... + 24790.

It is an arithmetic number, because the mean of its divisors is an integer number (34436776).

Almost surely, 2^137700709 is an apocalyptic number.

It is an amenable number.

137700709 is a deficient number, since it is larger than the sum of its proper divisors (46395).

137700709 is an equidigital number, since it uses as much as digits as its factorization.

137700709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46394.

The product of its (nonzero) digits is 9261, while the sum is 34.

The square root of 137700709 is about 11734.5945392246. The cubic root of 137700709 is about 516.3910724924.

The spelling of 137700709 in words is "one hundred thirty-seven million, seven hundred thousand, seven hundred nine".