66323442 has 16 divisors (see below), whose sum is σ = 132808032. Its totient is φ = 22080960.

The previous prime is 66323417. The next prime is 66323461. The reversal of 66323442 is 24432366.

It is a happy number.

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, 988 + ... + 11559.

It is an arithmetic number, because the mean of its divisors is an integer number (8300502).

Almost surely, 2^66323442 is an apocalyptic number.

66323442 is an abundant number, since it is smaller than the sum of its proper divisors (66484590).

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

66323442 is a wasteful number, since it uses less digits than its factorization.

66323442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13433.

The product of its digits is 20736, while the sum is 30.

The square root of 66323442 is about 8143.9205546223. The cubic root of 66323442 is about 404.7830815222.

The spelling of 66323442 in words is "sixty-six million, three hundred twenty-three thousand, four hundred forty-two".