137870 has 16 divisors (see below), whose sum is σ = 263088. Its totient is φ = 51840.

The previous prime is 137869. The next prime is 137873. The reversal of 137870 is 78731.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (137873) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 236 + ... + 575.

It is an arithmetic number, because the mean of its divisors is an integer number (16443).

2¹³⁷⁸⁷⁰ is an apocalyptic number.

137870 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

137870 is a deficient number, since it is larger than the sum of its proper divisors (125218).

137870 is a wasteful number, since it uses less digits than its factorization.

137870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 835.

The product of its (nonzero) digits is 1176, while the sum is 26.

The square root of 137870 is about 371.3084970749. The cubic root of 137870 is about 51.6602605076.

The spelling of 137870 in words is "one hundred thirty-seven thousand, eight hundred seventy".