68420567 has 4 divisors (see below), whose sum is σ = 68450976. Its totient is φ = 68390160.

The previous prime is 68420551. The next prime is 68420581. The reversal of 68420567 is 76502486.

It is a happy number.

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 68420567 - 2⁴ = 68420551 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 68420567.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68420507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11534 + ... + 16427.

It is an arithmetic number, because the mean of its divisors is an integer number (17112744).

Almost surely, 2^68420567 is an apocalyptic number.

68420567 is a deficient number, since it is larger than the sum of its proper divisors (30409).

68420567 is a wasteful number, since it uses less digits than its factorization.

68420567 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30408.

The product of its (nonzero) digits is 80640, while the sum is 38.

The square root of 68420567 is about 8271.6725636355. The cubic root of 68420567 is about 409.0052565565.

The spelling of 68420567 in words is "sixty-eight million, four hundred twenty thousand, five hundred sixty-seven".