137698706 has 4 divisors (see below), whose sum is σ = 206548062. Its totient is φ = 68849352.

The previous prime is 137698703. The next prime is 137698721. The reversal of 137698706 is 607896731.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 98823481 + 38875225 = 9941^2 + 6235^2 .

It is not an unprimeable number, because it can be changed into a prime (137698703) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34424675 + ... + 34424678.

Almost surely, 2^137698706 is an apocalyptic number.

137698706 is a deficient number, since it is larger than the sum of its proper divisors (68849356).

137698706 is an equidigital number, since it uses as much as digits as its factorization.

137698706 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68849355.

The product of its (nonzero) digits is 381024, while the sum is 47.

The square root of 137698706 is about 11734.5091929744. The cubic root of 137698706 is about 516.3885686653.

The spelling of 137698706 in words is "one hundred thirty-seven million, six hundred ninety-eight thousand, seven hundred six".