68625306 has 60 divisors (see below), whose sum is σ = 159417258. Its totient is φ = 22048848.

The previous prime is 68625299. The next prime is 68625317. The reversal of 68625306 is 60352686.

68625306 is a `hidden beast` number, since 68 + 62 + 530 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 45441081 + 23184225 = 6741^2 + 4815^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 641305 + ... + 641411.

Almost surely, 2^68625306 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68625306, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79708629).

68625306 is an abundant number, since it is smaller than the sum of its proper divisors (90791952).

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

68625306 is a wasteful number, since it uses less digits than its factorization.

68625306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265 (or 149 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The square root of 68625306 is about 8284.0392321620. The cubic root of 68625306 is about 409.4128140274.

The spelling of 68625306 in words is "sixty-eight million, six hundred twenty-five thousand, three hundred six".