66247030 has 16 divisors (see below), whose sum is σ = 120755520. Its totient is φ = 26163072.

The previous prime is 66247019. The next prime is 66247033. The reversal of 66247030 is 3074266.

It is a self number, because there is not a number n which added to its sum of digits gives 66247030.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66247033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41139 + ... + 42718.

It is an arithmetic number, because the mean of its divisors is an integer number (7547220).

Almost surely, 2^66247030 is an apocalyptic number.

66247030 is a deficient number, since it is larger than the sum of its proper divisors (54508490).

66247030 is a wasteful number, since it uses less digits than its factorization.

66247030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83943.

The product of its (nonzero) digits is 6048, while the sum is 28.

The square root of 66247030 is about 8139.2278503553. The cubic root of 66247030 is about 404.6275700375.

The spelling of 66247030 in words is "sixty-six million, two hundred forty-seven thousand, thirty".