66222426 has 16 divisors (see below), whose sum is σ = 134690400. Its totient is φ = 21699888.

The previous prime is 66222419. The next prime is 66222433. The reversal of 66222426 is 62422266.

It is an interprime number because it is at equal distance from previous prime (66222419) and next prime (66222433).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 66222393 and 66222402.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 93181 + ... + 93888.

It is an arithmetic number, because the mean of its divisors is an integer number (8418150).

Almost surely, 2^66222426 is an apocalyptic number.

66222426 is an abundant number, since it is smaller than the sum of its proper divisors (68467974).

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

66222426 is a wasteful number, since it uses less digits than its factorization.

66222426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187133.

The product of its digits is 13824, while the sum is 30.

The square root of 66222426 is about 8137.7162644074. The cubic root of 66222426 is about 404.5774712408.

The spelling of 66222426 in words is "sixty-six million, two hundred twenty-two thousand, four hundred twenty-six".