68809293 has 24 divisors (see below), whose sum is σ = 114028928. Its totient is φ = 39167712.

The previous prime is 68809291. The next prime is 68809303. The reversal of 68809293 is 39290886.

It is not a de Polignac number, because 68809293 - 2¹ = 68809291 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68809291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15480 + ... + 19422.

Almost surely, 2^68809293 is an apocalyptic number.

68809293 is a gapful number since it is divisible by the number (63) formed by its first and last digit.

It is an amenable number.

68809293 is a deficient number, since it is larger than the sum of its proper divisors (45219635).

68809293 is a wasteful number, since it uses less digits than its factorization.

68809293 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4233 (or 4230 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 45.

The square root of 68809293 is about 8295.1367077342. The cubic root of 68809293 is about 409.7783711959.

The spelling of 68809293 in words is "sixty-eight million, eight hundred nine thousand, two hundred ninety-three".