68565319 has 4 divisors (see below), whose sum is σ = 72174040. Its totient is φ = 64956600.

The previous prime is 68565313. The next prime is 68565337. The reversal of 68565319 is 91356586.

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 68565319 - 2³ = 68565311 is a prime.

It is a super-4 number, since 4×68565319⁴ (a number of 32 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68565311) 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, 1804332 + ... + 1804369.

It is an arithmetic number, because the mean of its divisors is an integer number (18043510).

Almost surely, 2^68565319 is an apocalyptic number.

68565319 is a deficient number, since it is larger than the sum of its proper divisors (3608721).

68565319 is a wasteful number, since it uses less digits than its factorization.

68565319 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3608720.

The product of its digits is 194400, while the sum is 43.

The square root of 68565319 is about 8280.4178034686. The cubic root of 68565319 is about 409.2934867831.

The spelling of 68565319 in words is "sixty-eight million, five hundred sixty-five thousand, three hundred nineteen".