68214643 has 16 divisors (see below), whose sum is σ = 81282304. Its totient is φ = 56026080.

The previous prime is 68214637. The next prime is 68214647. The reversal of 68214643 is 34641286.

It is a cyclic number.

It is not a de Polignac number, because 68214643 - 2¹³ = 68206451 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 68214599 and 68214608.

It is not an unprimeable number, because it can be changed into a prime (68214647) 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, 15388 + ... + 19318.

It is an arithmetic number, because the mean of its divisors is an integer number (5080144).

Almost surely, 2^68214643 is an apocalyptic number.

68214643 is a deficient number, since it is larger than the sum of its proper divisors (13067661).

68214643 is a wasteful number, since it uses less digits than its factorization.

68214643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4042.

The product of its digits is 27648, while the sum is 34.

The square root of 68214643 is about 8259.2156407252. The cubic root of 68214643 is about 408.5945192618.

The spelling of 68214643 in words is "sixty-eight million, two hundred fourteen thousand, six hundred forty-three".