68435263 has 4 divisors (see below), whose sum is σ = 73699528. Its totient is φ = 63171000.

The previous prime is 68435261. The next prime is 68435287. The reversal of 68435263 is 36253486.

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 68435263 - 2¹ = 68435261 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 (68435261) 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, 2632113 + ... + 2632138.

It is an arithmetic number, because the mean of its divisors is an integer number (18424882).

Almost surely, 2^68435263 is an apocalyptic number.

68435263 is a deficient number, since it is larger than the sum of its proper divisors (5264265).

68435263 is a wasteful number, since it uses less digits than its factorization.

68435263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5264264.

The product of its digits is 103680, while the sum is 37.

The square root of 68435263 is about 8272.5608489754. The cubic root of 68435263 is about 409.0345377664.

The spelling of 68435263 in words is "sixty-eight million, four hundred thirty-five thousand, two hundred sixty-three".