137870864 has 20 divisors (see below), whose sum is σ = 273641340. Its totient is φ = 67253760.

The previous prime is 137870849. The next prime is 137870869. The reversal of 137870864 is 468078731.

137870864 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 7728400 + 130142464 = 2780^2 + 11408^2 .

It is not an unprimeable number, because it can be changed into a prime (137870869) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 104429 + ... + 105740.

It is an arithmetic number, because the mean of its divisors is an integer number (13682067).

Almost surely, 2^137870864 is an apocalyptic number.

It is an amenable number.

137870864 is a deficient number, since it is larger than the sum of its proper divisors (135770476).

137870864 is a wasteful number, since it uses less digits than its factorization.

137870864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210218 (or 210212 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 44.

The square root of 137870864 is about 11741.8424448636. The cubic root of 137870864 is about 516.6036842177.

The spelling of 137870864 in words is "one hundred thirty-seven million, eight hundred seventy thousand, eight hundred sixty-four".