68678937 has 12 divisors (see below), whose sum is σ = 101075364. Its totient is φ = 44921760.

The previous prime is 68678923. The next prime is 68678941. The reversal of 68678937 is 73987686.

It can be written as a sum of positive squares in 2 ways, for example, as 44235801 + 24443136 = 6651^2 + 4944^2 .

It is not a de Polignac number, because 68678937 - 2⁴ = 68678921 is a prime.

It is not an unprimeable number, because it can be changed into a prime (68678737) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 71514 + ... + 72467.

It is an arithmetic number, because the mean of its divisors is an integer number (8422947).

Almost surely, 2^68678937 is an apocalyptic number.

It is an amenable number.

68678937 is a deficient number, since it is larger than the sum of its proper divisors (32396427).

68678937 is a wasteful number, since it uses less digits than its factorization.

68678937 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144040 (or 144037 counting only the distinct ones).

The product of its digits is 3048192, while the sum is 54.

The square root of 68678937 is about 8287.2756078219. The cubic root of 68678937 is about 409.5194389373.

The spelling of 68678937 in words is "sixty-eight million, six hundred seventy-eight thousand, nine hundred thirty-seven".