66471722 has 16 divisors (see below), whose sum is σ = 102358080. Its totient is φ = 32357472.

The previous prime is 66471689. The next prime is 66471733. The reversal of 66471722 is 22717466.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29798 + ... + 31950.

It is an arithmetic number, because the mean of its divisors is an integer number (6397380).

Almost surely, 2^66471722 is an apocalyptic number.

66471722 is a deficient number, since it is larger than the sum of its proper divisors (35886358).

66471722 is a wasteful number, since it uses less digits than its factorization.

66471722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2557.

The product of its digits is 28224, while the sum is 35.

The square root of 66471722 is about 8153.0191953656. The cubic root of 66471722 is about 405.0845162235.

The spelling of 66471722 in words is "sixty-six million, four hundred seventy-one thousand, seven hundred twenty-two".