5720665 has 8 divisors (see below), whose sum is σ = 6886080. Its totient is φ = 4562352.

The previous prime is 5720657. The next prime is 5720707. The reversal of 5720665 is 5660275.

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

It is a cyclic number.

It is not a de Polignac number, because 5720665 - 2³ = 5720657 is a prime.

5720665 is a lucky 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, 202 + ... + 3388.

It is an arithmetic number, because the mean of its divisors is an integer number (860760).

Almost surely, 2^5720665 is an apocalyptic number.

It is an amenable number.

5720665 is a deficient number, since it is larger than the sum of its proper divisors (1165415).

5720665 is a wasteful number, since it uses less digits than its factorization.

5720665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3551.

The product of its (nonzero) digits is 12600, while the sum is 31.

The square root of 5720665 is about 2391.7911698140. The cubic root of 5720665 is about 178.8472110482.

The spelling of 5720665 in words is "five million, seven hundred twenty thousand, six hundred sixty-five".