66912622 has 16 divisors (see below), whose sum is σ = 115480800. Its totient is φ = 28483488.

The previous prime is 66912607. The next prime is 66912647. The reversal of 66912622 is 22621966.

It is a congruent number.

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, 13953 + ... + 18124.

It is an arithmetic number, because the mean of its divisors is an integer number (7217550).

Almost surely, 2^66912622 is an apocalyptic number.

66912622 is a deficient number, since it is larger than the sum of its proper divisors (48568178).

66912622 is a wasteful number, since it uses less digits than its factorization.

66912622 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32235.

The product of its digits is 15552, while the sum is 34.

The square root of 66912622 is about 8180.0135696709. The cubic root of 66912622 is about 405.9781710703.

The spelling of 66912622 in words is "sixty-six million, nine hundred twelve thousand, six hundred twenty-two".