137651707 has 4 divisors (see below), whose sum is σ = 138496360. Its totient is φ = 136807056.

The previous prime is 137651681. The next prime is 137651743. The reversal of 137651707 is 707156731.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 137651707 - 2²⁷ = 3433979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (137651207) 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, 422082 + ... + 422407.

It is an arithmetic number, because the mean of its divisors is an integer number (34624090).

Almost surely, 2^137651707 is an apocalyptic number.

137651707 is a deficient number, since it is larger than the sum of its proper divisors (844653).

137651707 is an equidigital number, since it uses as much as digits as its factorization.

137651707 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 844652.

The product of its (nonzero) digits is 30870, while the sum is 37.

The square root of 137651707 is about 11732.5064244602. The cubic root of 137651707 is about 516.3298111339.

The spelling of 137651707 in words is "one hundred thirty-seven million, six hundred fifty-one thousand, seven hundred seven".