66468742 has 8 divisors (see below), whose sum is σ = 105568056. Its totient is φ = 31279392.

The previous prime is 66468739. The next prime is 66468767. The reversal of 66468742 is 24786466.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 977448 + ... + 977515.

It is an arithmetic number, because the mean of its divisors is an integer number (13196007).

Almost surely, 2^66468742 is an apocalyptic number.

66468742 is a deficient number, since it is larger than the sum of its proper divisors (39099314).

66468742 is a wasteful number, since it uses less digits than its factorization.

66468742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1954982.

The product of its digits is 387072, while the sum is 43.

The square root of 66468742 is about 8152.8364389334. The cubic root of 66468742 is about 405.0784626724.

The spelling of 66468742 in words is "sixty-six million, four hundred sixty-eight thousand, seven hundred forty-two".