68906259 has 12 divisors (see below), whose sum is σ = 99613800. Its totient is φ = 45899424.

The previous prime is 68906239. The next prime is 68906303. The reversal of 68906259 is 95260986.

It is not a de Polignac number, because 68906259 - 2¹⁵ = 68873491 is a prime.

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

It is not an unprimeable number, because it can be changed into a prime (68906209) 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 11 ways as a sum of consecutive naturals, for example, 12207 + ... + 16935.

It is an arithmetic number, because the mean of its divisors is an integer number (8301150).

Almost surely, 2^68906259 is an apocalyptic number.

68906259 is a deficient number, since it is larger than the sum of its proper divisors (30707541).

68906259 is a wasteful number, since it uses less digits than its factorization.

68906259 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6354 (or 6351 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 45.

The square root of 68906259 is about 8300.9794000467. The cubic root of 68906259 is about 409.9707672991.

It can be divided in two parts, 6890625 and 9, that multiplied together give a square (62015625 = 7875²).

The spelling of 68906259 in words is "sixty-eight million, nine hundred six thousand, two hundred fifty-nine".