68556019 has 8 divisors (see below), whose sum is σ = 82958688. Its totient is φ = 55305600.

The previous prime is 68556013. The next prime is 68556023. The reversal of 68556019 is 91065586.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 68556019 - 2⁵ = 68555987 is a prime.

It is a super-2 number, since 2×68556019² = 9399855482256722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68556013) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 287932 + ... + 288169.

It is an arithmetic number, because the mean of its divisors is an integer number (10369836).

Almost surely, 2^68556019 is an apocalyptic number.

68556019 is a deficient number, since it is larger than the sum of its proper divisors (14402669).

68556019 is a wasteful number, since it uses less digits than its factorization.

68556019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 576125.

The product of its (nonzero) digits is 64800, while the sum is 40.

The square root of 68556019 is about 8279.8562185584. The cubic root of 68556019 is about 409.2749808212.

The spelling of 68556019 in words is "sixty-eight million, five hundred fifty-six thousand, nineteen".