68213735 has 16 divisors (see below), whose sum is σ = 84326400. Its totient is φ = 52948896.

The previous prime is 68213723. The next prime is 68213737. The reversal of 68213735 is 53731286.

It is a cyclic number.

It is not a de Polignac number, because 68213735 - 2⁸ = 68213479 is a prime.

It is a super-2 number, since 2×68213735² = 9306227285300450, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 68213695 and 68213704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68213737) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21842 + ... + 24768.

It is an arithmetic number, because the mean of its divisors is an integer number (5270400).

Almost surely, 2^68213735 is an apocalyptic number.

68213735 is a deficient number, since it is larger than the sum of its proper divisors (16112665).

68213735 is a wasteful number, since it uses less digits than its factorization.

68213735 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3070.

The product of its digits is 30240, while the sum is 35.

The square root of 68213735 is about 8259.1606716421. The cubic root of 68213735 is about 408.5927063301.

The spelling of 68213735 in words is "sixty-eight million, two hundred thirteen thousand, seven hundred thirty-five".