66253017 has 8 divisors (see below), whose sum is σ = 89656096. Its totient is φ = 43509312.

The previous prime is 66253013. The next prime is 66253027. The reversal of 66253017 is 71035266.

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

It is not a de Polignac number, because 66253017 - 2² = 66253013 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66253013) 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, 164608 + ... + 165009.

It is an arithmetic number, because the mean of its divisors is an integer number (11207012).

Almost surely, 2^66253017 is an apocalyptic number.

66253017 is a gapful number since it is divisible by the number (67) formed by its first and last digit.

It is an amenable number.

66253017 is a deficient number, since it is larger than the sum of its proper divisors (23403079).

66253017 is a wasteful number, since it uses less digits than its factorization.

66253017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 329687.

The product of its (nonzero) digits is 7560, while the sum is 30.

The square root of 66253017 is about 8139.5956287767. The cubic root of 66253017 is about 404.6397589225.

The spelling of 66253017 in words is "sixty-six million, two hundred fifty-three thousand, seventeen".