66053299 has 4 divisors (see below), whose sum is σ = 71134336. Its totient is φ = 60972264.

The previous prime is 66053297. The next prime is 66053311. The reversal of 66053299 is 99235066.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 66053299 - 2¹ = 66053297 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66053297) 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, 2540499 + ... + 2540524.

It is an arithmetic number, because the mean of its divisors is an integer number (17783584).

Almost surely, 2^66053299 is an apocalyptic number.

66053299 is a deficient number, since it is larger than the sum of its proper divisors (5081037).

66053299 is a wasteful number, since it uses less digits than its factorization.

66053299 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5081036.

The product of its (nonzero) digits is 87480, while the sum is 40.

The square root of 66053299 is about 8127.3180693264. The cubic root of 66053299 is about 404.2327576666.

The spelling of 66053299 in words is "sixty-six million, fifty-three thousand, two hundred ninety-nine".