66412622 has 4 divisors (see below), whose sum is σ = 99618936. Its totient is φ = 33206310.

The previous prime is 66412613. The next prime is 66412627. The reversal of 66412622 is 22621466.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66412627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16603154 + ... + 16603157.

It is an arithmetic number, because the mean of its divisors is an integer number (24904734).

Almost surely, 2^66412622 is an apocalyptic number.

66412622 is a deficient number, since it is larger than the sum of its proper divisors (33206314).

66412622 is a wasteful number, since it uses less digits than its factorization.

66412622 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33206313.

The product of its digits is 6912, while the sum is 29.

The square root of 66412622 is about 8149.3939651977. The cubic root of 66412622 is about 404.9644270945.

The spelling of 66412622 in words is "sixty-six million, four hundred twelve thousand, six hundred twenty-two".