423667266 has 64 divisors (see below), whose sum is σ = 972435456. Its totient is φ = 121867200.

The previous prime is 423667229. The next prime is 423667267. The reversal of 423667266 is 662766324.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (423667267) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 106485 + ... + 110391.

It is an arithmetic number, because the mean of its divisors is an integer number (15194304).

Almost surely, 2^423667266 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 423667266, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (486217728).

423667266 is an abundant number, since it is smaller than the sum of its proper divisors (548768190).

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

423667266 is a wasteful number, since it uses less digits than its factorization.

423667266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4007.

The product of its digits is 435456, while the sum is 42.

The square root of 423667266 is about 20583.1792005025. The cubic root of 423667266 is about 751.0605830667.

The spelling of 423667266 in words is "four hundred twenty-three million, six hundred sixty-seven thousand, two hundred sixty-six".