68090479 has 4 divisors (see below), whose sum is σ = 68508376. Its totient is φ = 67672584.

The previous prime is 68090459. The next prime is 68090483. The reversal of 68090479 is 97409086.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 68090479 - 2¹⁷ = 67959407 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68090459) 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, 208704 + ... + 209029.

It is an arithmetic number, because the mean of its divisors is an integer number (17127094).

Almost surely, 2^68090479 is an apocalyptic number.

68090479 is a deficient number, since it is larger than the sum of its proper divisors (417897).

68090479 is a wasteful number, since it uses less digits than its factorization.

68090479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 417896.

The product of its (nonzero) digits is 108864, while the sum is 43.

The square root of 68090479 is about 8251.6955227396. The cubic root of 68090479 is about 408.3464613670.

The spelling of 68090479 in words is "sixty-eight million, ninety thousand, four hundred seventy-nine".