137638775 has 6 divisors (see below), whose sum is σ = 170672112. Its totient is φ = 110111000.

The previous prime is 137638759. The next prime is 137638811. The reversal of 137638775 is 577836731.

It is a happy number.

137638775 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 137638775 - 2⁴ = 137638759 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 2752751 + ... + 2752800.

It is an arithmetic number, because the mean of its divisors is an integer number (28445352).

Almost surely, 2^137638775 is an apocalyptic number.

137638775 is a deficient number, since it is larger than the sum of its proper divisors (33033337).

137638775 is an equidigital number, since it uses as much as digits as its factorization.

137638775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5505561 (or 5505556 counting only the distinct ones).

The product of its digits is 740880, while the sum is 47.

The square root of 137638775 is about 11731.9552931300. The cubic root of 137638775 is about 516.3136413714.

The spelling of 137638775 in words is "one hundred thirty-seven million, six hundred thirty-eight thousand, seven hundred seventy-five".