5620645 has 8 divisors (see below), whose sum is σ = 6766200. Its totient is φ = 4482240.

The previous prime is 5620631. The next prime is 5620669. The reversal of 5620645 is 5460265.

It can be written as a sum of positive squares in 4 ways, for example, as 1723969 + 3896676 = 1313^2 + 1974^2 .

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

It is not a de Polignac number, because 5620645 - 2¹¹ = 5618597 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 135 + ... + 3355.

It is an arithmetic number, because the mean of its divisors is an integer number (845775).

Almost surely, 2^5620645 is an apocalyptic number.

It is an amenable number.

5620645 is a deficient number, since it is larger than the sum of its proper divisors (1145555).

5620645 is a wasteful number, since it uses less digits than its factorization.

5620645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3575.

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 5620645 is about 2370.7899527373. The cubic root of 5620645 is about 177.7987562772.

The spelling of 5620645 in words is "five million, six hundred twenty thousand, six hundred forty-five".