66653241 has 8 divisors (see below), whose sum is σ = 92735040. Its totient is φ = 42503472.

The previous prime is 66653231. The next prime is 66653261. The reversal of 66653241 is 14235666.

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

It is not a de Polignac number, because 66653241 - 2⁷ = 66653113 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66653221) 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, 482926 + ... + 483063.

It is an arithmetic number, because the mean of its divisors is an integer number (11591880).

Almost surely, 2^66653241 is an apocalyptic number.

It is an amenable number.

66653241 is a deficient number, since it is larger than the sum of its proper divisors (26081799).

66653241 is a wasteful number, since it uses less digits than its factorization.

66653241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 966015.

The product of its digits is 25920, while the sum is 33.

The square root of 66653241 is about 8164.1436170611. The cubic root of 66653241 is about 405.4529120053.

The spelling of 66653241 in words is "sixty-six million, six hundred fifty-three thousand, two hundred forty-one".