66454022 has 16 divisors (see below), whose sum is σ = 103366800. Its totient is φ = 32004000.

The previous prime is 66454019. The next prime is 66454027. The reversal of 66454022 is 22045466.

It is a super-2 number, since 2×66454022² = 8832274079952968, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66454027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28397 + ... + 30647.

It is an arithmetic number, because the mean of its divisors is an integer number (6460425).

Almost surely, 2^66454022 is an apocalyptic number.

66454022 is a deficient number, since it is larger than the sum of its proper divisors (36912778).

66454022 is a wasteful number, since it uses less digits than its factorization.

66454022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2791.

The product of its (nonzero) digits is 11520, while the sum is 29.

The square root of 66454022 is about 8151.9336356474. The cubic root of 66454022 is about 405.0485579131.

Adding to 66454022 its reverse (22045466), we get a palindrome (88499488).

The spelling of 66454022 in words is "sixty-six million, four hundred fifty-four thousand, twenty-two".