6609867801 has 32 divisors (see below), whose sum is σ = 9912988800. Its totient is φ = 3892976640.

The previous prime is 6609867793. The next prime is 6609867841. The reversal of 6609867801 is 1087689066.

It is a happy number.

It is not a de Polignac number, because 6609867801 - 2³ = 6609867793 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (6609867841) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 74331 + ... + 136911.

It is an arithmetic number, because the mean of its divisors is an integer number (309780900).

Almost surely, 2^6609867801 is an apocalyptic number.

It is an amenable number.

6609867801 is a deficient number, since it is larger than the sum of its proper divisors (3303120999).

6609867801 is a wasteful number, since it uses less digits than its factorization.

6609867801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62729.

The product of its (nonzero) digits is 870912, while the sum is 51.

The square root of 6609867801 is about 81301.0934797313. The cubic root of 6609867801 is about 1876.7118281702.

The spelling of 6609867801 in words is "six billion, six hundred nine million, eight hundred sixty-seven thousand, eight hundred one".