68890361 has 8 divisors (see below), whose sum is σ = 69915240. Its totient is φ = 67871232.

The previous prime is 68890357. The next prime is 68890363. The reversal of 68890361 is 16309886.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 361 + 68890000 = 19^2 + 8300^2 .

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 68890361 - 2² = 68890357 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68890363) 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, 26621 + ... + 29093.

It is an arithmetic number, because the mean of its divisors is an integer number (8739405).

Almost surely, 2^68890361 is an apocalyptic number.

It is an amenable number.

68890361 is a deficient number, since it is larger than the sum of its proper divisors (1024879).

68890361 is a wasteful number, since it uses less digits than its factorization.

68890361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2875.

The product of its (nonzero) digits is 62208, while the sum is 41.

The square root of 68890361 is about 8300.0217469595. The cubic root of 68890361 is about 409.9392354921.

The spelling of 68890361 in words is "sixty-eight million, eight hundred ninety thousand, three hundred sixty-one".