66242436 has 48 divisors (see below), whose sum is σ = 175224000. Its totient is φ = 19308672.

The previous prime is 66242389. The next prime is 66242437. The reversal of 66242436 is 63424266.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 66242397 and 66242406.

It is not an unprimeable number, because it can be changed into a prime (66242437) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8211 + ... + 14138.

It is an arithmetic number, because the mean of its divisors is an integer number (3650500).

Almost surely, 2^66242436 is an apocalyptic number.

It is an amenable number.

66242436 is an abundant number, since it is smaller than the sum of its proper divisors (108981564).

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

66242436 is a wasteful number, since it uses less digits than its factorization.

66242436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22388 (or 22386 counting only the distinct ones).

The product of its digits is 41472, while the sum is 33.

The square root of 66242436 is about 8138.9456319600. The cubic root of 66242436 is about 404.6182166520.

The spelling of 66242436 in words is "sixty-six million, two hundred forty-two thousand, four hundred thirty-six".