5653639 has 4 divisors (see below), whose sum is σ = 5986224. Its totient is φ = 5321056.

The previous prime is 5653633. The next prime is 5653643. The reversal of 5653639 is 9363565.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9363565 = 5 ⋅1872713.

It is a cyclic number.

It is not a de Polignac number, because 5653639 - 2¹³ = 5645447 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 5653598 and 5653607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5653633) 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, 166267 + ... + 166300.

It is an arithmetic number, because the mean of its divisors is an integer number (1496556).

Almost surely, 2^5653639 is an apocalyptic number.

5653639 is a deficient number, since it is larger than the sum of its proper divisors (332585).

5653639 is a wasteful number, since it uses less digits than its factorization.

5653639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 332584.

The product of its digits is 72900, while the sum is 37.

The square root of 5653639 is about 2377.7382109896. The cubic root of 5653639 is about 178.1459792259.

The spelling of 5653639 in words is "five million, six hundred fifty-three thousand, six hundred thirty-nine".