68849893 has 4 divisors (see below), whose sum is σ = 78685600. Its totient is φ = 59014188.

The previous prime is 68849887. The next prime is 68849903. The reversal of 68849893 is 39894886.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 68849893 - 2¹⁷ = 68718821 is a prime.

It is a super-2 number, since 2×68849893² = 9480615532222898, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68849993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4917843 + ... + 4917856.

It is an arithmetic number, because the mean of its divisors is an integer number (19671400).

Almost surely, 2^68849893 is an apocalyptic number.

It is an amenable number.

68849893 is a deficient number, since it is larger than the sum of its proper divisors (9835707).

68849893 is an equidigital number, since it uses as much as digits as its factorization.

68849893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9835706.

The product of its digits is 2985984, while the sum is 55.

The square root of 68849893 is about 8297.5835639058. The cubic root of 68849893 is about 409.8589500929.

The spelling of 68849893 in words is "sixty-eight million, eight hundred forty-nine thousand, eight hundred ninety-three".