68499943 has 4 divisors (see below), whose sum is σ = 70862040. Its totient is φ = 66137848.

The previous prime is 68499941. The next prime is 68499947. The reversal of 68499943 is 34999486.

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 68499943 - 2¹ = 68499941 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 (68499941) 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, 1181005 + ... + 1181062.

It is an arithmetic number, because the mean of its divisors is an integer number (17715510).

Almost surely, 2^68499943 is an apocalyptic number.

68499943 is a deficient number, since it is larger than the sum of its proper divisors (2362097).

68499943 is a wasteful number, since it uses less digits than its factorization.

68499943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2362096.

The product of its digits is 1679616, while the sum is 52.

The square root of 68499943 is about 8276.4692351268. The cubic root of 68499943 is about 409.1633603561.

The spelling of 68499943 in words is "sixty-eight million, four hundred ninety-nine thousand, nine hundred forty-three".