6624022261 has 4 divisors (see below), whose sum is σ = 6624280972. Its totient is φ = 6623763552.

The previous prime is 6624022259. The next prime is 6624022289. The reversal of 6624022261 is 1622204266.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2135826225 + 4488196036 = 46215^2 + 66994^2 .

It is a cyclic number.

It is not a de Polignac number, because 6624022261 - 2¹ = 6624022259 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 (6624022291) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 86136 + ... + 143761.

It is an arithmetic number, because the mean of its divisors is an integer number (1656070243).

Almost surely, 2^6624022261 is an apocalyptic number.

It is an amenable number.

6624022261 is a deficient number, since it is larger than the sum of its proper divisors (258711).

6624022261 is a wasteful number, since it uses less digits than its factorization.

6624022261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258710.

The product of its (nonzero) digits is 13824, while the sum is 31.

The square root of 6624022261 is about 81388.0965559461. The cubic root of 6624022261 is about 1878.0504784246.

The spelling of 6624022261 in words is "six billion, six hundred twenty-four million, twenty-two thousand, two hundred sixty-one".