5661622066 has 8 divisors (see below), whose sum is σ = 8553530160. Its totient is φ = 2810445348.

The previous prime is 5661622037. The next prime is 5661622067. The reversal of 5661622066 is 6602261665.

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

It is not an unprimeable number, because it can be changed into a prime (5661622067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10182496 + ... + 10183051.

It is an arithmetic number, because the mean of its divisors is an integer number (1069191270).

Almost surely, 2^5661622066 is an apocalyptic number.

5661622066 is a deficient number, since it is larger than the sum of its proper divisors (2891908094).

5661622066 is a wasteful number, since it uses less digits than its factorization.

5661622066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20365688.

The product of its (nonzero) digits is 155520, while the sum is 40.

The square root of 5661622066 is about 75243.7510096353. The cubic root of 5661622066 is about 1782.2978850728.

The spelling of 5661622066 in words is "five billion, six hundred sixty-one million, six hundred twenty-two thousand, sixty-six".