66298971 has 8 divisors (see below), whose sum is σ = 88848144. Its totient is φ = 43974560.

The previous prime is 66298951. The next prime is 66299003. The reversal of 66298971 is 17989266.

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

It is a cyclic number.

It is not a de Polignac number, because 66298971 - 2⁶ = 66298907 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 66298971.

It is not an unprimeable number, because it can be changed into a prime (66298951) 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, 55500 + ... + 56681.

It is an arithmetic number, because the mean of its divisors is an integer number (11106018).

Almost surely, 2^66298971 is an apocalyptic number.

66298971 is a deficient number, since it is larger than the sum of its proper divisors (22549173).

66298971 is a wasteful number, since it uses less digits than its factorization.

66298971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112381.

The product of its digits is 326592, while the sum is 48.

The square root of 66298971 is about 8142.4180069559. The cubic root of 66298971 is about 404.7332918602.

The spelling of 66298971 in words is "sixty-six million, two hundred ninety-eight thousand, nine hundred seventy-one".