137998746 has 12 divisors (see below), whose sum is σ = 298997322. Its totient is φ = 45999576.

The previous prime is 137998727. The next prime is 137998753. The reversal of 137998746 is 647899731.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 84548025 + 53450721 = 9195^2 + 7311^2 .

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 137998692 and 137998701.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3833281 + ... + 3833316.

Almost surely, 2^137998746 is an apocalyptic number.

137998746 is an abundant number, since it is smaller than the sum of its proper divisors (160998576).

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

137998746 is a wasteful number, since it uses less digits than its factorization.

137998746 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7666605 (or 7666602 counting only the distinct ones).

The product of its digits is 2286144, while the sum is 54.

The square root of 137998746 is about 11747.2867505650. The cubic root of 137998746 is about 516.7633599582.

The spelling of 137998746 in words is "one hundred thirty-seven million, nine hundred ninety-eight thousand, seven hundred forty-six".