66574022 has 4 divisors (see below), whose sum is σ = 99861036. Its totient is φ = 33287010.

The previous prime is 66574021. The next prime is 66574031. The reversal of 66574022 is 22047566.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 22047566 = 2 ⋅11023783.

It is a self number, because there is not a number n which added to its sum of digits gives 66574022.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66574021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16643504 + ... + 16643507.

It is an arithmetic number, because the mean of its divisors is an integer number (24965259).

Almost surely, 2^66574022 is an apocalyptic number.

66574022 is a deficient number, since it is larger than the sum of its proper divisors (33287014).

66574022 is a wasteful number, since it uses less digits than its factorization.

66574022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33287013.

The product of its (nonzero) digits is 20160, while the sum is 32.

The square root of 66574022 is about 8159.2905328834. The cubic root of 66574022 is about 405.2922181059.

The spelling of 66574022 in words is "sixty-six million, five hundred seventy-four thousand, twenty-two".