66896722 has 16 divisors (see below), whose sum is σ = 101559744. Its totient is φ = 33046000.

The previous prime is 66896699. The next prime is 66896723. The reversal of 66896722 is 22769866.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (66896723) 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, 81072 + ... + 81892.

It is an arithmetic number, because the mean of its divisors is an integer number (6347484).

Almost surely, 2^66896722 is an apocalyptic number.

66896722 is a deficient number, since it is larger than the sum of its proper divisors (34663022).

66896722 is a wasteful number, since it uses less digits than its factorization.

66896722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1265.

The product of its digits is 435456, while the sum is 46.

The square root of 66896722 is about 8179.0416309003. The cubic root of 66896722 is about 405.9460118947.

The spelling of 66896722 in words is "sixty-six million, eight hundred ninety-six thousand, seven hundred twenty-two".