68825381 has 8 divisors (see below), whose sum is σ = 71393400. Its totient is φ = 66270400.

The previous prime is 68825377. The next prime is 68825387. The reversal of 68825381 is 18352886.

It can be written as a sum of positive squares in 4 ways, for example, as 7344100 + 61481281 = 2710^2 + 7841^2 .

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 68825381 - 2² = 68825377 is a prime.

It is a super-2 number, since 2×68825381² = 9473866139590322, 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 (68825387) 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, 8231 + ... + 14331.

It is an arithmetic number, because the mean of its divisors is an integer number (8924175).

Almost surely, 2^68825381 is an apocalyptic number.

It is an amenable number.

68825381 is a deficient number, since it is larger than the sum of its proper divisors (2568019).

68825381 is a wasteful number, since it uses less digits than its factorization.

68825381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6519.

The product of its digits is 92160, while the sum is 41.

The square root of 68825381 is about 8296.1063758850. The cubic root of 68825381 is about 409.8103048705.

The spelling of 68825381 in words is "sixty-eight million, eight hundred twenty-five thousand, three hundred eighty-one".