6621262253 has 8 divisors (see below), whose sum is σ = 6987955200. Its totient is φ = 6256389888.

The previous prime is 6621262243. The next prime is 6621262267. The reversal of 6621262253 is 3522621266.

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 6621262253 - 2²² = 6617067949 is a prime.

It is a super-2 number, since 2×6621262253² = 87682227646005272018, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6621262243) 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, 447668 + ... + 462221.

It is an arithmetic number, because the mean of its divisors is an integer number (873494400).

Almost surely, 2^6621262253 is an apocalyptic number.

It is an amenable number.

6621262253 is a deficient number, since it is larger than the sum of its proper divisors (366692947).

6621262253 is a wasteful number, since it uses less digits than its factorization.

6621262253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 910291.

The product of its digits is 51840, while the sum is 35.

The square root of 6621262253 is about 81371.1389437311. The cubic root of 6621262253 is about 1877.7896019647.

The spelling of 6621262253 in words is "six billion, six hundred twenty-one million, two hundred sixty-two thousand, two hundred fifty-three".