66422361 has 4 divisors (see below), whose sum is σ = 88563152. Its totient is φ = 44281572.

The previous prime is 66422359. The next prime is 66422387. The reversal of 66422361 is 16322466.

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.

It is not a de Polignac number, because 66422361 - 2¹ = 66422359 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66422341) 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, 11070391 + ... + 11070396.

It is an arithmetic number, because the mean of its divisors is an integer number (22140788).

Almost surely, 2^66422361 is an apocalyptic number.

It is an amenable number.

66422361 is a deficient number, since it is larger than the sum of its proper divisors (22140791).

66422361 is a wasteful number, since it uses less digits than its factorization.

66422361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22140790.

The product of its digits is 10368, while the sum is 30.

The square root of 66422361 is about 8149.9914723882. The cubic root of 66422361 is about 404.9842213027.

The spelling of 66422361 in words is "sixty-six million, four hundred twenty-two thousand, three hundred sixty-one".