66374842 has 4 divisors (see below), whose sum is σ = 99562266. Its totient is φ = 33187420.

The previous prime is 66374839. The next prime is 66374873. The reversal of 66374842 is 24847366.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 65270241 + 1104601 = 8079^2 + 1051^2 .

It is a junction number, because it is equal to n+sod(n) for n = 66374795 and 66374804.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16593709 + ... + 16593712.

Almost surely, 2^66374842 is an apocalyptic number.

66374842 is a deficient number, since it is larger than the sum of its proper divisors (33187424).

66374842 is a wasteful number, since it uses less digits than its factorization.

66374842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33187423.

The product of its digits is 193536, while the sum is 40.

The square root of 66374842 is about 8147.0756716751. The cubic root of 66374842 is about 404.8876221256.

The spelling of 66374842 in words is "sixty-six million, three hundred seventy-four thousand, eight hundred forty-two".