68918670 has 24 divisors (see below), whose sum is σ = 179188776. Its totient is φ = 18378288.

The previous prime is 68918657. The next prime is 68918683. The reversal of 68918670 is 7681986.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (68918657) and next prime (68918683).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 382792 + ... + 382971.

It is an arithmetic number, because the mean of its divisors is an integer number (7466199).

Almost surely, 2^68918670 is an apocalyptic number.

68918670 is an abundant number, since it is smaller than the sum of its proper divisors (110270106).

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

68918670 is a wasteful number, since it uses less digits than its factorization.

68918670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 765776 (or 765773 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 45.

The square root of 68918670 is about 8301.7269287781. The cubic root of 68918670 is about 409.9953796822.

The spelling of 68918670 in words is "sixty-eight million, nine hundred eighteen thousand, six hundred seventy".