66022369 has 4 divisors (see below), whose sum is σ = 75454144. Its totient is φ = 56590596.

The previous prime is 66022367. The next prime is 66022381. The reversal of 66022369 is 96322066.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 96322066 = 2 ⋅48161033.

It is a cyclic number.

It is not a de Polignac number, because 66022369 - 2¹ = 66022367 is a prime.

It is a super-2 number, since 2×66022369² = 8717906416744322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66022367) 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, 4715877 + ... + 4715890.

It is an arithmetic number, because the mean of its divisors is an integer number (18863536).

Almost surely, 2^66022369 is an apocalyptic number.

It is an amenable number.

66022369 is a deficient number, since it is larger than the sum of its proper divisors (9431775).

66022369 is an equidigital number, since it uses as much as digits as its factorization.

66022369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9431774.

The product of its (nonzero) digits is 23328, while the sum is 34.

The square root of 66022369 is about 8125.4150047859. The cubic root of 66022369 is about 404.1696527123.

The spelling of 66022369 in words is "sixty-six million, twenty-two thousand, three hundred sixty-nine".