66303673 has 16 divisors (see below), whose sum is σ = 71372800. Its totient is φ = 61410960.

The previous prime is 66303649. The next prime is 66303697. The reversal of 66303673 is 37630366.

It is an interprime number because it is at equal distance from previous prime (66303649) and next prime (66303697).

It is a cyclic number.

It is not a de Polignac number, because 66303673 - 2²¹ = 64206521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66303613) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 244528 + ... + 244798.

It is an arithmetic number, because the mean of its divisors is an integer number (4460800).

Almost surely, 2^66303673 is an apocalyptic number.

It is an amenable number.

66303673 is a deficient number, since it is larger than the sum of its proper divisors (5069127).

66303673 is a wasteful number, since it uses less digits than its factorization.

66303673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 532.

The product of its (nonzero) digits is 40824, while the sum is 34.

The square root of 66303673 is about 8142.7067367062. The cubic root of 66303673 is about 404.7428596856.

The spelling of 66303673 in words is "sixty-six million, three hundred three thousand, six hundred seventy-three".