66468745 has 48 divisors (see below), whose sum is σ = 99316800. Its totient is φ = 42456960.

The previous prime is 66468739. The next prime is 66468767. The reversal of 66468745 is 54786466.

It is not a de Polignac number, because 66468745 - 2⁵ = 66468713 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 66468695 and 66468704.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 507330 + ... + 507460.

It is an arithmetic number, because the mean of its divisors is an integer number (2069100).

Almost surely, 2^66468745 is an apocalyptic number.

It is an amenable number.

66468745 is a deficient number, since it is larger than the sum of its proper divisors (32848055).

66468745 is a wasteful number, since it uses less digits than its factorization.

66468745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278 (or 271 counting only the distinct ones).

The product of its digits is 967680, while the sum is 46.

The square root of 66468745 is about 8152.8366229184. The cubic root of 66468745 is about 405.0784687666.

The spelling of 66468745 in words is "sixty-six million, four hundred sixty-eight thousand, seven hundred forty-five".