5623720 has 16 divisors (see below), whose sum is σ = 12653460. Its totient is φ = 2249472.

The previous prime is 5623649. The next prime is 5623727. The reversal of 5623720 is 273265.

5623720 = 17² + 18² + ... + 256².

It can be written as a sum of positive squares in 2 ways, for example, as 5410276 + 213444 = 2326^2 + 462^2 .

It is not an unprimeable number, because it can be changed into a prime (5623727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70257 + ... + 70336.

Almost surely, 2^5623720 is an apocalyptic number.

It is an amenable number.

5623720 is an abundant number, since it is smaller than the sum of its proper divisors (7029740).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5623720 is a wasteful number, since it uses less digits than its factorization.

5623720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140604 (or 140600 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 25.

The square root of 5623720 is about 2371.4383820795. The cubic root of 5623720 is about 177.8311743539.

Adding to 5623720 its reverse (273265), we get a palindrome (5896985).

The spelling of 5623720 in words is "five million, six hundred twenty-three thousand, seven hundred twenty".