68130666 has 32 divisors (see below), whose sum is σ = 152974080. Its totient is φ = 22474368.

The previous prime is 68130641. The next prime is 68130691. The reversal of 68130666 is 66603186.

It is an interprime number because it is at equal distance from previous prime (68130641) and next prime (68130691).

It is a self number, because there is not a number n which added to its sum of digits gives 68130666.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1266 + ... + 11741.

It is an arithmetic number, because the mean of its divisors is an integer number (4780440).

Almost surely, 2^68130666 is an apocalyptic number.

68130666 is an abundant number, since it is smaller than the sum of its proper divisors (84843414).

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

68130666 is a wasteful number, since it uses less digits than its factorization.

68130666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13115 (or 13109 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 68130666 is about 8254.1302388562. The cubic root of 68130666 is about 408.4267809266.

The spelling of 68130666 in words is "sixty-eight million, one hundred thirty thousand, six hundred sixty-six".