68546563 has 4 divisors (see below), whose sum is σ = 68647608. Its totient is φ = 68445520.

The previous prime is 68546557. The next prime is 68546573. The reversal of 68546563 is 36564586.

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 68546563 - 2¹⁷ = 68415491 is a prime.

It is a super-2 number, since 2×68546563² = 9397262598225938, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68546573) 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, 49498 + ... + 50863.

It is an arithmetic number, because the mean of its divisors is an integer number (17161902).

Almost surely, 2^68546563 is an apocalyptic number.

68546563 is a deficient number, since it is larger than the sum of its proper divisors (101045).

68546563 is a wasteful number, since it uses less digits than its factorization.

68546563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101044.

The product of its digits is 518400, while the sum is 43.

The square root of 68546563 is about 8279.2851744580. The cubic root of 68546563 is about 409.2561627207.

The spelling of 68546563 in words is "sixty-eight million, five hundred forty-six thousand, five hundred sixty-three".