61066503 has 12 divisors (see below), whose sum is σ = 89271000. Its totient is φ = 40220016.

The previous prime is 61066501. The next prime is 61066531. The reversal of 61066503 is 30566016.

61066503 is a `hidden beast` number, since 6 + 1 + 0 + 6 + 650 + 3 = 666.

It is not a de Polignac number, because 61066503 - 2¹ = 61066501 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61066501) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 40128 + ... + 41621.

It is an arithmetic number, because the mean of its divisors is an integer number (7439250).

Almost surely, 2^61066503 is an apocalyptic number.

61066503 is a deficient number, since it is larger than the sum of its proper divisors (28204497).

61066503 is a wasteful number, since it uses less digits than its factorization.

61066503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81838 (or 81835 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

The square root of 61066503 is about 7814.5059344785. The cubic root of 61066503 is about 393.7927203837.

The spelling of 61066503 in words is "sixty-one million, sixty-six thousand, five hundred three".