5656819 has 8 divisors (see below), whose sum is σ = 6639968. Its totient is φ = 4717440.

The previous prime is 5656817. The next prime is 5656823. The reversal of 5656819 is 9186565.

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

It is not a de Polignac number, because 5656819 - 2¹ = 5656817 is a prime.

It is a super-2 number, since 2×5656819² = 63999202397522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5656817) 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, 10662 + ... + 11179.

It is an arithmetic number, because the mean of its divisors is an integer number (829996).

Almost surely, 2^5656819 is an apocalyptic number.

5656819 is a deficient number, since it is larger than the sum of its proper divisors (983149).

5656819 is a wasteful number, since it uses less digits than its factorization.

5656819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21885.

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

The square root of 5656819 is about 2378.4068197010. The cubic root of 5656819 is about 178.1793735308.

The spelling of 5656819 in words is "five million, six hundred fifty-six thousand, eight hundred nineteen".