137866797 has 24 divisors (see below), whose sum is σ = 202059000. Its totient is φ = 90574848.

The previous prime is 137866789. The next prime is 137866811. The reversal of 137866797 is 797668731.

It can be written as a sum of positive squares in 4 ways, for example, as 5294601 + 132572196 = 2301^2 + 11514^2 .

It is not a de Polignac number, because 137866797 - 2³ = 137866789 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (137866777) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 306829 + ... + 307277.

It is an arithmetic number, because the mean of its divisors is an integer number (8419125).

Almost surely, 2^137866797 is an apocalyptic number.

It is an amenable number.

137866797 is a deficient number, since it is larger than the sum of its proper divisors (64192203).

137866797 is a wasteful number, since it uses less digits than its factorization.

137866797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 877 (or 874 counting only the distinct ones).

The product of its digits is 2667168, while the sum is 54.

The square root of 137866797 is about 11741.6692595218. The cubic root of 137866797 is about 516.5986044694.

The spelling of 137866797 in words is "one hundred thirty-seven million, eight hundred sixty-six thousand, seven hundred ninety-seven".