6622561401 has 8 divisors (see below), whose sum is σ = 8830836864. Its totient is φ = 4414663440.

The previous prime is 6622561357. The next prime is 6622561409. The reversal of 6622561401 is 1041652266.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 6622561401 - 2¹¹ = 6622559353 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6622561409) 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, 50530 + ... + 125691.

It is an arithmetic number, because the mean of its divisors is an integer number (1103854608).

Almost surely, 2^6622561401 is an apocalyptic number.

It is an amenable number.

6622561401 is a deficient number, since it is larger than the sum of its proper divisors (2208275463).

6622561401 is a wasteful number, since it uses less digits than its factorization.

6622561401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188751.

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 6622561401 is about 81379.1214071521. The cubic root of 6622561401 is about 1877.9124066998.

The spelling of 6622561401 in words is "six billion, six hundred twenty-two million, five hundred sixty-one thousand, four hundred one".