68668670 has 32 divisors (see below), whose sum is σ = 145084608. Its totient is φ = 22906368.

The previous prime is 68668657. The next prime is 68668673. The reversal of 68668670 is 7686686.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68668673) 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, 10667 + ... + 15846.

It is an arithmetic number, because the mean of its divisors is an integer number (4533894).

Almost surely, 2^68668670 is an apocalyptic number.

68668670 is an abundant number, since it is smaller than the sum of its proper divisors (76415938).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68668670 is a wasteful number, since it uses less digits than its factorization.

68668670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26564.

The product of its (nonzero) digits is 580608, while the sum is 47.

The square root of 68668670 is about 8286.6561410499. The cubic root of 68668670 is about 409.4990311976.

The spelling of 68668670 in words is "sixty-eight million, six hundred sixty-eight thousand, six hundred seventy".