5739661 has 4 divisors (see below), whose sum is σ = 5777824. Its totient is φ = 5701500.

The previous prime is 5739649. The next prime is 5739667. The reversal of 5739661 is 1669375.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 5739661 - 2¹³ = 5731469 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 5739661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5739667) 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, 18855 + ... + 19156.

It is an arithmetic number, because the mean of its divisors is an integer number (1444456).

Almost surely, 2^5739661 is an apocalyptic number.

It is an amenable number.

5739661 is a deficient number, since it is larger than the sum of its proper divisors (38163).

5739661 is a wasteful number, since it uses less digits than its factorization.

5739661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38162.

The product of its digits is 34020, while the sum is 37.

The square root of 5739661 is about 2395.7589611645. The cubic root of 5739661 is about 179.0449519346.

It can be divided in two parts, 5739 and 661, that added together give a square (6400 = 80²).

The spelling of 5739661 in words is "five million, seven hundred thirty-nine thousand, six hundred sixty-one".