68873869 has 8 divisors (see below), whose sum is σ = 71377560. Its totient is φ = 66378816.

The previous prime is 68873863. The next prime is 68873881. The reversal of 68873869 is 96837886.

It can be written as a sum of positive squares in 4 ways, for example, as 149769 + 68724100 = 387^2 + 8290^2 .

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 68873869 - 2¹³ = 68865677 is a prime.

It is a super-2 number, since 2×68873869² = 9487219662058322, 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 (68873863) 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, 17119 + ... + 20755.

It is an arithmetic number, because the mean of its divisors is an integer number (8922195).

Almost surely, 2^68873869 is an apocalyptic number.

It is an amenable number.

68873869 is a deficient number, since it is larger than the sum of its proper divisors (2503691).

68873869 is a wasteful number, since it uses less digits than its factorization.

68873869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4319.

The product of its digits is 3483648, while the sum is 55.

The square root of 68873869 is about 8299.0281961203. The cubic root of 68873869 is about 409.9065204294.

The spelling of 68873869 in words is "sixty-eight million, eight hundred seventy-three thousand, eight hundred sixty-nine".