66122474 has 16 divisors (see below), whose sum is σ = 108387936. Its totient is φ = 30003600.

The previous prime is 66122453. The next prime is 66122477. The reversal of 66122474 is 47422166.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 66122474.

It is not an unprimeable number, because it can be changed into a prime (66122477) 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, 12269 + ... + 16815.

It is an arithmetic number, because the mean of its divisors is an integer number (6774246).

Almost surely, 2^66122474 is an apocalyptic number.

66122474 is a deficient number, since it is larger than the sum of its proper divisors (42265462).

66122474 is a wasteful number, since it uses less digits than its factorization.

66122474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5221.

The product of its digits is 16128, while the sum is 32.

The square root of 66122474 is about 8131.5726646203. The cubic root of 66122474 is about 404.3738207458.

The spelling of 66122474 in words is "sixty-six million, one hundred twenty-two thousand, four hundred seventy-four".