66231365 has 8 divisors (see below), whose sum is σ = 79954560. Its totient is φ = 52667152.

The previous prime is 66231353. The next prime is 66231377. The reversal of 66231365 is 56313266.

It is an interprime number because it is at equal distance from previous prime (66231353) and next prime (66231377).

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 66231365 - 2⁴ = 66231349 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38825 + ... + 40494.

It is an arithmetic number, because the mean of its divisors is an integer number (9994320).

Almost surely, 2^66231365 is an apocalyptic number.

It is an amenable number.

66231365 is a deficient number, since it is larger than the sum of its proper divisors (13723195).

66231365 is a wasteful number, since it uses less digits than its factorization.

66231365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79491.

The product of its digits is 19440, while the sum is 32.

The square root of 66231365 is about 8138.2654785894. The cubic root of 66231365 is about 404.5956743155.

The spelling of 66231365 in words is "sixty-six million, two hundred thirty-one thousand, three hundred sixty-five".