56678219 has 4 divisors (see below), whose sum is σ = 61038096. Its totient is φ = 52318344.

The previous prime is 56678183. The next prime is 56678231. The reversal of 56678219 is 91287665.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 56678219 - 2²⁰ = 55629643 is a prime.

It is a super-2 number, since 2×56678219² = 6424841018023922, which contains 22 as substring.

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 56678219.

It is not an unprimeable number, because it can be changed into a prime (56678299) 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, 2179919 + ... + 2179944.

It is an arithmetic number, because the mean of its divisors is an integer number (15259524).

Almost surely, 2^56678219 is an apocalyptic number.

56678219 is a deficient number, since it is larger than the sum of its proper divisors (4359877).

56678219 is a wasteful number, since it uses less digits than its factorization.

56678219 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4359876.

The product of its digits is 181440, while the sum is 44.

The square root of 56678219 is about 7528.4938068647. The cubic root of 56678219 is about 384.1245504361.

The spelling of 56678219 in words is "fifty-six million, six hundred seventy-eight thousand, two hundred nineteen".