66468567 has 24 divisors (see below), whose sum is σ = 98824320. Its totient is φ = 39701200.

The previous prime is 66468559. The next prime is 66468569. The reversal of 66468567 is 76586466.

It is not a de Polignac number, because 66468567 - 2³ = 66468559 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66468569) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24484 + ... + 27062.

It is an arithmetic number, because the mean of its divisors is an integer number (4117680).

Almost surely, 2^66468567 is an apocalyptic number.

66468567 is a deficient number, since it is larger than the sum of its proper divisors (32355753).

66468567 is a wasteful number, since it uses less digits than its factorization.

66468567 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2675 (or 2664 counting only the distinct ones).

The product of its digits is 1451520, while the sum is 48.

The square root of 66468567 is about 8152.8257064652. The cubic root of 66468567 is about 405.0781071730.

The spelling of 66468567 in words is "sixty-six million, four hundred sixty-eight thousand, five hundred sixty-seven".