68731670 has 32 divisors (see below), whose sum is σ = 141887808. Its totient is φ = 23482368.

The previous prime is 68731669. The next prime is 68731679. The reversal of 68731670 is 7613786.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68731679) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20342 + ... + 23478.

It is an arithmetic number, because the mean of its divisors is an integer number (4433994).

Almost surely, 2^68731670 is an apocalyptic number.

68731670 is an abundant number, since it is smaller than the sum of its proper divisors (73156138).

68731670 is a wasteful number, since it uses less digits than its factorization.

68731670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3464.

The product of its (nonzero) digits is 42336, while the sum is 38.

The square root of 68731670 is about 8290.4565616135. The cubic root of 68731670 is about 409.6242244063.

The spelling of 68731670 in words is "sixty-eight million, seven hundred thirty-one thousand, six hundred seventy".