61363813 has 8 divisors (see below), whose sum is σ = 70200128. Its totient is φ = 52545024.

The previous prime is 61363781. The next prime is 61363817. The reversal of 61363813 is 31836316.

61363813 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 61363813 - 2⁵ = 61363781 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61363817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4270 + ... + 11872.

It is an arithmetic number, because the mean of its divisors is an integer number (8775016).

Almost surely, 2^61363813 is an apocalyptic number.

It is an amenable number.

61363813 is a deficient number, since it is larger than the sum of its proper divisors (8836315).

61363813 is a wasteful number, since it uses less digits than its factorization.

61363813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8763.

The product of its digits is 7776, while the sum is 31.

The square root of 61363813 is about 7833.5057924278. The cubic root of 61363813 is about 394.4307626074.

The spelling of 61363813 in words is "sixty-one million, three hundred sixty-three thousand, eight hundred thirteen".