65666122 has 8 divisors (see below), whose sum is σ = 101676672. Its totient is φ = 31773900.

The previous prime is 65666113. The next prime is 65666123. The reversal of 65666122 is 22166656.

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 (65666123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 529504 + ... + 529627.

It is an arithmetic number, because the mean of its divisors is an integer number (12709584).

Almost surely, 2^65666122 is an apocalyptic number.

65666122 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

65666122 is a deficient number, since it is larger than the sum of its proper divisors (36010550).

65666122 is a wasteful number, since it uses less digits than its factorization.

65666122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1059164.

The product of its digits is 25920, while the sum is 34.

The square root of 65666122 is about 8103.4635804698. The cubic root of 65666122 is about 403.4413945974.

The spelling of 65666122 in words is "sixty-five million, six hundred sixty-six thousand, one hundred twenty-two".