68420833 has 12 divisors (see below), whose sum is σ = 75314748. Its totient is φ = 62112960.

The previous prime is 68420761. The next prime is 68420857. The reversal of 68420833 is 33802486.

It can be written as a sum of positive squares in 6 ways, for example, as 49956624 + 18464209 = 7068^2 + 4297^2 .

It is not a de Polignac number, because 68420833 - 2⁹ = 68420321 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68420533) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6991 + ... + 13627.

It is an arithmetic number, because the mean of its divisors is an integer number (6276229).

Almost surely, 2^68420833 is an apocalyptic number.

It is an amenable number.

68420833 is a deficient number, since it is larger than the sum of its proper divisors (6893915).

68420833 is a wasteful number, since it uses less digits than its factorization.

68420833 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6724 (or 6711 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 34.

The square root of 68420833 is about 8271.6886425929. The cubic root of 68420833 is about 409.0057865885.

The spelling of 68420833 in words is "sixty-eight million, four hundred twenty thousand, eight hundred thirty-three".