61020063 has 12 divisors (see below), whose sum is σ = 94920280. Its totient is φ = 37550736.

The previous prime is 61020061. The next prime is 61020073. The reversal of 61020063 is 36002016.

It is a happy number.

It is not a de Polignac number, because 61020063 - 2¹ = 61020061 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61020061) 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, 260653 + ... + 260886.

Almost surely, 2^61020063 is an apocalyptic number.

61020063 is a deficient number, since it is larger than the sum of its proper divisors (33900217).

61020063 is a wasteful number, since it uses less digits than its factorization.

61020063 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 521558 (or 521555 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 61020063 is about 7811.5339722746. The cubic root of 61020063 is about 393.6928709255.

Adding to 61020063 its reverse (36002016), we get a palindrome (97022079).

The spelling of 61020063 in words is "sixty-one million, twenty thousand, sixty-three".