66364503 has 16 divisors (see below), whose sum is σ = 90478080. Its totient is φ = 43258176.

The previous prime is 66364483. The next prime is 66364537. The reversal of 66364503 is 30546366.

It is a happy number.

It is not a de Polignac number, because 66364503 - 2⁵ = 66364471 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66364553) 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, 24051 + ... + 26667.

It is an arithmetic number, because the mean of its divisors is an integer number (5654880).

Almost surely, 2^66364503 is an apocalyptic number.

66364503 is a deficient number, since it is larger than the sum of its proper divisors (24113577).

66364503 is a wasteful number, since it uses less digits than its factorization.

66364503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2806.

The product of its (nonzero) digits is 38880, while the sum is 33.

The square root of 66364503 is about 8146.4411248103. The cubic root of 66364503 is about 404.8665983442.

The spelling of 66364503 in words is "sixty-six million, three hundred sixty-four thousand, five hundred three".