66875468 has 24 divisors (see below), whose sum is σ = 129475584. Its totient is φ = 29968400.

The previous prime is 66875461. The next prime is 66875491. The reversal of 66875468 is 86457866.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (66875461) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7580 + ... + 13827.

It is an arithmetic number, because the mean of its divisors is an integer number (5394816).

Almost surely, 2^66875468 is an apocalyptic number.

It is an amenable number.

66875468 is a deficient number, since it is larger than the sum of its proper divisors (62600116).

66875468 is a wasteful number, since it uses less digits than its factorization.

66875468 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21493 (or 21491 counting only the distinct ones).

The product of its digits is 1935360, while the sum is 50.

The square root of 66875468 is about 8177.7422312029. The cubic root of 66875468 is about 405.9030158147.

The spelling of 66875468 in words is "sixty-six million, eight hundred seventy-five thousand, four hundred sixty-eight".