68779870 has 16 divisors (see below), whose sum is σ = 125501040. Its totient is φ = 27134784.

The previous prime is 68779861. The next prime is 68779897. The reversal of 68779870 is 7897786.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46380 + ... + 47839.

It is an arithmetic number, because the mean of its divisors is an integer number (7843815).

Almost surely, 2^68779870 is an apocalyptic number.

68779870 is a deficient number, since it is larger than the sum of its proper divisors (56721170).

68779870 is a wasteful number, since it uses less digits than its factorization.

68779870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94299.

The product of its (nonzero) digits is 1185408, while the sum is 52.

The square root of 68779870 is about 8293.3630090573. The cubic root of 68779870 is about 409.7199555013.

The spelling of 68779870 in words is "sixty-eight million, seven hundred seventy-nine thousand, eight hundred seventy".