423294660 has 120 divisors (see below), whose sum is σ = 1360492056. Its totient is φ = 110108160.

The previous prime is 423294659. The next prime is 423294721. The reversal of 423294660 is 66492324.

It can be written as a sum of positive squares in 4 ways, for example, as 19766916 + 403527744 = 4446^2 + 20088^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 63234 + ... + 69606.

Almost surely, 2^423294660 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 423294660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (680246028).

423294660 is an abundant number, since it is smaller than the sum of its proper divisors (937197396).

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

423294660 is a wasteful number, since it uses less digits than its factorization.

423294660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6435 (or 6424 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 36.

The square root of 423294660 is about 20574.1259838662. The cubic root of 423294660 is about 750.8403380909.

The spelling of 423294660 in words is "four hundred twenty-three million, two hundred ninety-four thousand, six hundred sixty".