68860069 has 4 divisors (see below), whose sum is σ = 68911596. Its totient is φ = 68808544.

The previous prime is 68859991. The next prime is 68860073. The reversal of 68860069 is 96006886.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 56700900 + 12159169 = 7530^2 + 3487^2 .

It is a cyclic number.

It is not a de Polignac number, because 68860069 - 2²³ = 60471461 is a prime.

It is a super-2 number, since 2×68860069² = 9483418205369522, 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 (68860669) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23704 + ... + 26449.

It is an arithmetic number, because the mean of its divisors is an integer number (17227899).

Almost surely, 2^68860069 is an apocalyptic number.

It is an amenable number.

68860069 is a deficient number, since it is larger than the sum of its proper divisors (51527).

68860069 is a wasteful number, since it uses less digits than its factorization.

68860069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51526.

The product of its (nonzero) digits is 124416, while the sum is 43.

The square root of 68860069 is about 8298.1967318207. The cubic root of 68860069 is about 409.8791414543.

The spelling of 68860069 in words is "sixty-eight million, eight hundred sixty thousand, sixty-nine".