68166679 has 8 divisors (see below), whose sum is σ = 78474528. Its totient is φ = 58001280.

The previous prime is 68166677. The next prime is 68166689. The reversal of 68166679 is 97666186.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 68166679 - 2¹ = 68166677 is a prime.

It is a super-2 number, since 2×68166679² = 9293392251778082, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68166677) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34582 + ... + 36499.

It is an arithmetic number, because the mean of its divisors is an integer number (9809316).

Almost surely, 2^68166679 is an apocalyptic number.

68166679 is a deficient number, since it is larger than the sum of its proper divisors (10307849).

68166679 is a wasteful number, since it uses less digits than its factorization.

68166679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71225.

The product of its digits is 653184, while the sum is 49.

The square root of 68166679 is about 8256.3114645706. The cubic root of 68166679 is about 408.4987313110.

The spelling of 68166679 in words is "sixty-eight million, one hundred sixty-six thousand, six hundred seventy-nine".