5723657621 has 16 divisors (see below), whose sum is σ = 6272352960. Its totient is φ = 5179749120.

The previous prime is 5723657609. The next prime is 5723657647. The reversal of 5723657621 is 1267563275.

It is a cyclic number.

It is not a de Polignac number, because 5723657621 - 2⁶ = 5723657557 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5723657221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3054941 + ... + 3056813.

It is an arithmetic number, because the mean of its divisors is an integer number (392022060).

Almost surely, 2^5723657621 is an apocalyptic number.

It is an amenable number.

5723657621 is a deficient number, since it is larger than the sum of its proper divisors (548695339).

5723657621 is a wasteful number, since it uses less digits than its factorization.

5723657621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2996.

The product of its digits is 529200, while the sum is 44.

The square root of 5723657621 is about 75654.8585419337. The cubic root of 5723657621 is about 1788.7839207454.

The spelling of 5723657621 in words is "five billion, seven hundred twenty-three million, six hundred fifty-seven thousand, six hundred twenty-one".