5906721 has 8 divisors (see below), whose sum is σ = 7949664. Its totient is φ = 3900800.

The previous prime is 5906713. The next prime is 5906723. The reversal of 5906721 is 1276095.

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 5906721 - 2³ = 5906713 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5906723) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8880 + ... + 9521.

It is an arithmetic number, because the mean of its divisors is an integer number (993708).

Almost surely, 2^5906721 is an apocalyptic number.

It is an amenable number.

5906721 is a deficient number, since it is larger than the sum of its proper divisors (2042943).

5906721 is a wasteful number, since it uses less digits than its factorization.

5906721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18511.

The product of its (nonzero) digits is 3780, while the sum is 30.

The square root of 5906721 is about 2430.3746624749. The cubic root of 5906721 is about 180.7654746675.

The spelling of 5906721 in words is "five million, nine hundred six thousand, seven hundred twenty-one".