66410022 has 16 divisors (see below), whose sum is σ = 151794432. Its totient is φ = 18974280.

The previous prime is 66409991. The next prime is 66410023. The reversal of 66410022 is 22001466.

It is a happy number.

It is a super-3 number, since 3×66410022³ (a number of 24 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66410023) 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, 790554 + ... + 790637.

It is an arithmetic number, because the mean of its divisors is an integer number (9487152).

Almost surely, 2^66410022 is an apocalyptic number.

66410022 is an abundant number, since it is smaller than the sum of its proper divisors (85384410).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66410022 is a wasteful number, since it uses less digits than its factorization.

66410022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1581203.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 66410022 is about 8149.2344425719. The cubic root of 66410022 is about 404.9591423499.

Adding to 66410022 its reverse (22001466), we get a palindrome (88411488).

The spelling of 66410022 in words is "sixty-six million, four hundred ten thousand, twenty-two".