268718406 has 64 divisors (see below), whose sum is σ = 619833600. Its totient is φ = 76809600.

The previous prime is 268718399. The next prime is 268718413. The reversal of 268718406 is 604817862.

It is an interprime number because it is at equal distance from previous prime (268718399) and next prime (268718413).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 527680 + ... + 528188.

It is an arithmetic number, because the mean of its divisors is an integer number (9684900).

Almost surely, 2^268718406 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 268718406, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (309916800).

268718406 is an abundant number, since it is smaller than the sum of its proper divisors (351115194).

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

268718406 is a wasteful number, since it uses less digits than its factorization.

268718406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 965.

The product of its (nonzero) digits is 129024, while the sum is 42.

The square root of 268718406 is about 16392.6326744669. The cubic root of 268718406 is about 645.3061511581.

The spelling of 268718406 in words is "two hundred sixty-eight million, seven hundred eighteen thousand, four hundred six".