68935783 has 4 divisors (see below), whose sum is σ = 78783760. Its totient is φ = 59087808.

The previous prime is 68935759. The next prime is 68935849. The reversal of 68935783 is 38753986.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 38753986 = 2 ⋅19376993.

It is a cyclic number.

It is not a de Polignac number, because 68935783 - 2¹³ = 68927591 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 (68935703) 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 3 ways as a sum of consecutive naturals, for example, 4923978 + ... + 4923991.

It is an arithmetic number, because the mean of its divisors is an integer number (19695940).

Almost surely, 2^68935783 is an apocalyptic number.

68935783 is a deficient number, since it is larger than the sum of its proper divisors (9847977).

68935783 is an equidigital number, since it uses as much as digits as its factorization.

68935783 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9847976.

The product of its digits is 1088640, while the sum is 49.

The square root of 68935783 is about 8302.7575539696. The cubic root of 68935783 is about 410.0293118048.

The spelling of 68935783 in words is "sixty-eight million, nine hundred thirty-five thousand, seven hundred eighty-three".