137263986 has 12 divisors (see below), whose sum is σ = 297405342. Its totient is φ = 45754656.

The previous prime is 137263963. The next prime is 137263991. The reversal of 137263986 is 689362731.

137263986 is a `hidden beast` number, since 1 + 3 + 7 + 2 + 639 + 8 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 124880625 + 12383361 = 11175^2 + 3519^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3812871 + ... + 3812906.

Almost surely, 2^137263986 is an apocalyptic number.

137263986 is an abundant number, since it is smaller than the sum of its proper divisors (160141356).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

137263986 is a wasteful number, since it uses less digits than its factorization.

137263986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7625785 (or 7625782 counting only the distinct ones).

The product of its digits is 326592, while the sum is 45.

The square root of 137263986 is about 11715.9714065885. The cubic root of 137263986 is about 515.8445764096.

The spelling of 137263986 in words is "one hundred thirty-seven million, two hundred sixty-three thousand, nine hundred eighty-six".