662253521 has 8 divisors (see below), whose sum is σ = 668143080. Its totient is φ = 656389888.

The previous prime is 662253517. The next prime is 662253551. The reversal of 662253521 is 125352266.

It can be written as a sum of positive squares in 4 ways, for example, as 134908225 + 527345296 = 11615^2 + 22964^2 .

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 662253521 - 2² = 662253517 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (662253511) 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, 46745 + ... + 59241.

It is an arithmetic number, because the mean of its divisors is an integer number (83517885).

Almost surely, 2^662253521 is an apocalyptic number.

It is an amenable number.

662253521 is a deficient number, since it is larger than the sum of its proper divisors (5889559).

662253521 is a wasteful number, since it uses less digits than its factorization.

662253521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12963.

The product of its digits is 21600, while the sum is 32.

The square root of 662253521 is about 25734.2868756840. The cubic root of 662253521 is about 871.6485766717.

The spelling of 662253521 in words is "six hundred sixty-two million, two hundred fifty-three thousand, five hundred twenty-one".