5638765 has 8 divisors (see below), whose sum is σ = 7381728. Its totient is φ = 4100880.

The previous prime is 5638757. The next prime is 5638769. The reversal of 5638765 is 5678365.

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

It is not a de Polignac number, because 5638765 - 2³ = 5638757 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

5638765 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5638769) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51207 + ... + 51316.

It is an arithmetic number, because the mean of its divisors is an integer number (922716).

Almost surely, 2^5638765 is an apocalyptic number.

5638765 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

5638765 is a deficient number, since it is larger than the sum of its proper divisors (1742963).

5638765 is a wasteful number, since it uses less digits than its factorization.

5638765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102539.

The product of its digits is 151200, while the sum is 40.

The square root of 5638765 is about 2374.6083887665. The cubic root of 5638765 is about 177.9896156043.

The spelling of 5638765 in words is "five million, six hundred thirty-eight thousand, seven hundred sixty-five".