66272593 has 4 divisors (see below), whose sum is σ = 66364480. Its totient is φ = 66180708.

The previous prime is 66272567. The next prime is 66272597. The reversal of 66272593 is 39527266.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 66272593 - 2¹⁷ = 66141521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66272597) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44853 + ... + 46306.

It is an arithmetic number, because the mean of its divisors is an integer number (16591120).

Almost surely, 2^66272593 is an apocalyptic number.

It is an amenable number.

66272593 is a deficient number, since it is larger than the sum of its proper divisors (91887).

66272593 is an equidigital number, since it uses as much as digits as its factorization.

66272593 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91886.

The product of its digits is 136080, while the sum is 40.

The square root of 66272593 is about 8140.7980567018. The cubic root of 66272593 is about 404.6796084178.

The spelling of 66272593 in words is "sixty-six million, two hundred seventy-two thousand, five hundred ninety-three".