61363663 has 4 divisors (see below), whose sum is σ = 63343168. Its totient is φ = 59384160.

The previous prime is 61363651. The next prime is 61363669. The reversal of 61363663 is 36636316.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 61363663 - 2¹³ = 61355471 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61363669) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 989706 + ... + 989767.

It is an arithmetic number, because the mean of its divisors is an integer number (15835792).

Almost surely, 2^61363663 is an apocalyptic number.

61363663 is a deficient number, since it is larger than the sum of its proper divisors (1979505).

61363663 is a wasteful number, since it uses less digits than its factorization.

61363663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1979504.

The product of its digits is 34992, while the sum is 34.

The square root of 61363663 is about 7833.4962181647. The cubic root of 61363663 is about 394.4304412201.

Adding to 61363663 its reverse (36636316), we get a palindrome (97999979).

It can be divided in two parts, 61363 and 663, that added together give a palindrome (62026).

The spelling of 61363663 in words is "sixty-one million, three hundred sixty-three thousand, six hundred sixty-three".