66301899 has 8 divisors (see below), whose sum is σ = 89901120. Its totient is φ = 43451976.

The previous prime is 66301883. The next prime is 66301909. The reversal of 66301899 is 99810366.

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

It is not a de Polignac number, because 66301899 - 2⁴ = 66301883 is a prime.

It is a super-2 number, since 2×66301899² = 8791883622012402, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 66301899.

It is not an unprimeable number, because it can be changed into a prime (66301199) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 187117 + ... + 187470.

It is an arithmetic number, because the mean of its divisors is an integer number (11237640).

Almost surely, 2^66301899 is an apocalyptic number.

66301899 is a deficient number, since it is larger than the sum of its proper divisors (23599221).

66301899 is a wasteful number, since it uses less digits than its factorization.

66301899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 374649.

The product of its (nonzero) digits is 69984, while the sum is 42.

The square root of 66301899 is about 8142.5978041409. The cubic root of 66301899 is about 404.7392499297.

The spelling of 66301899 in words is "sixty-six million, three hundred one thousand, eight hundred ninety-nine".