137947698 has 192 divisors, whose sum is σ = 387459072. Its totient is φ = 35925120.

The previous prime is 137947661. The next prime is 137947727. The reversal of 137947698 is 896749731.

It is a happy number.

137947698 is a `hidden beast` number, since 13 + 79 + 476 + 98 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 3208065 + ... + 3208107.

It is an arithmetic number, because the mean of its divisors is an integer number (2018016).

Almost surely, 2^137947698 is an apocalyptic number.

137947698 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 137947698, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (193729536).

137947698 is an abundant number, since it is smaller than the sum of its proper divisors (249511374).

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

137947698 is a wasteful number, since it uses less digits than its factorization.

137947698 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131 (or 119 counting only the distinct ones).

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

The square root of 137947698 is about 11745.1137925522. The cubic root of 137947698 is about 516.6996323514.

The spelling of 137947698 in words is "one hundred thirty-seven million, nine hundred forty-seven thousand, six hundred ninety-eight".