68225645 has 8 divisors (see below), whose sum is σ = 82062456. Its totient is φ = 54452736.

The previous prime is 68225639. The next prime is 68225683. The reversal of 68225645 is 54652286.

It can be written as a sum of positive squares in 4 ways, for example, as 4959529 + 63266116 = 2227^2 + 7954^2 .

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 68225645 - 2¹⁴ = 68209261 is a prime.

It is a super-3 number, since 3×68225645³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 68225599 and 68225608.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13592 + ... + 17921.

It is an arithmetic number, because the mean of its divisors is an integer number (10257807).

Almost surely, 2^68225645 is an apocalyptic number.

It is an amenable number.

68225645 is a deficient number, since it is larger than the sum of its proper divisors (13836811).

68225645 is a wasteful number, since it uses less digits than its factorization.

68225645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31951.

The product of its digits is 115200, while the sum is 38.

The square root of 68225645 is about 8259.8816577479. The cubic root of 68225645 is about 408.6164848059.

The spelling of 68225645 in words is "sixty-eight million, two hundred twenty-five thousand, six hundred forty-five".