68925389 has 4 divisors (see below), whose sum is σ = 74227356. Its totient is φ = 63623424.

The previous prime is 68925383. The next prime is 68925401. The reversal of 68925389 is 98352986.

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 37002889 + 31922500 = 6083^2 + 5650^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68925389 is a prime.

It is a super-3 number, since 3×68925389³ (a number of 24 digits) contains 333 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 (68925383) 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, 2650964 + ... + 2650989.

It is an arithmetic number, because the mean of its divisors is an integer number (18556839).

Almost surely, 2^68925389 is an apocalyptic number.

It is an amenable number.

68925389 is a deficient number, since it is larger than the sum of its proper divisors (5301967).

68925389 is a wasteful number, since it uses less digits than its factorization.

68925389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5301966.

The product of its digits is 933120, while the sum is 50.

The square root of 68925389 is about 8302.1315937535. The cubic root of 68925389 is about 410.0087029681.

The spelling of 68925389 in words is "sixty-eight million, nine hundred twenty-five thousand, three hundred eighty-nine".