66345245 has 8 divisors (see below), whose sum is σ = 83804640. Its totient is φ = 50282640.

The previous prime is 66345229. The next prime is 66345263. The reversal of 66345245 is 54254366.

It is a happy number.

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

It is not a de Polignac number, because 66345245 - 2⁴ = 66345229 is a prime.

It is a super-2 number, since 2×66345245² = 8803383068220050, which contains 22 as substring.

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, 349091 + ... + 349280.

It is an arithmetic number, because the mean of its divisors is an integer number (10475580).

Almost surely, 2^66345245 is an apocalyptic number.

It is an amenable number.

66345245 is a deficient number, since it is larger than the sum of its proper divisors (17459395).

66345245 is a wasteful number, since it uses less digits than its factorization.

66345245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 698395.

The product of its digits is 86400, while the sum is 35.

The square root of 66345245 is about 8145.2590505152. The cubic root of 66345245 is about 404.8274324503.

The spelling of 66345245 in words is "sixty-six million, three hundred forty-five thousand, two hundred forty-five".