68433613 has 8 divisors (see below), whose sum is σ = 69363000. Its totient is φ = 67507968.

The previous prime is 68433601. The next prime is 68433719. The reversal of 68433613 is 31633486.

It can be written as a sum of positive squares in 4 ways, for example, as 34070569 + 34363044 = 5837^2 + 5862^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68433613 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 (68433413) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64713 + ... + 65761.

It is an arithmetic number, because the mean of its divisors is an integer number (8670375).

Almost surely, 2^68433613 is an apocalyptic number.

It is an amenable number.

68433613 is a deficient number, since it is larger than the sum of its proper divisors (929387).

68433613 is a wasteful number, since it uses less digits than its factorization.

68433613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1871.

The product of its digits is 31104, while the sum is 34.

The square root of 68433613 is about 8272.4611210933. The cubic root of 68433613 is about 409.0312504144.

The spelling of 68433613 in words is "sixty-eight million, four hundred thirty-three thousand, six hundred thirteen".