6619800261 has 8 divisors (see below), whose sum is σ = 8826818400. Its totient is φ = 4412991152.

The previous prime is 6619800247. The next prime is 6619800283. The reversal of 6619800261 is 1620089166.

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 6619800261 - 2³⁰ = 5546058437 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6619840261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50515 + ... + 125663.

It is an arithmetic number, because the mean of its divisors is an integer number (1103352300).

Almost surely, 2^6619800261 is an apocalyptic number.

It is an amenable number.

6619800261 is a deficient number, since it is larger than the sum of its proper divisors (2207018139).

6619800261 is a wasteful number, since it uses less digits than its factorization.

6619800261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104515.

The product of its (nonzero) digits is 31104, while the sum is 39.

The square root of 6619800261 is about 81362.1549677736. The cubic root of 6619800261 is about 1877.6513848417.

The spelling of 6619800261 in words is "six billion, six hundred nineteen million, eight hundred thousand, two hundred sixty-one".