66025267 has 8 divisors (see below), whose sum is σ = 82317312. Its totient is φ = 51448200.

The previous prime is 66025231. The next prime is 66025291. The reversal of 66025267 is 76252066.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 66025267 - 2¹⁵ = 65992499 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66025207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 428659 + ... + 428812.

It is an arithmetic number, because the mean of its divisors is an integer number (10289664).

Almost surely, 2^66025267 is an apocalyptic number.

66025267 is a deficient number, since it is larger than the sum of its proper divisors (16292045).

66025267 is a wasteful number, since it uses less digits than its factorization.

66025267 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 857489.

The product of its (nonzero) digits is 30240, while the sum is 34.

The square root of 66025267 is about 8125.5933321820. The cubic root of 66025267 is about 404.1755661956.

The spelling of 66025267 in words is "sixty-six million, twenty-five thousand, two hundred sixty-seven".