61104863 has 4 divisors (see below), whose sum is σ = 61645728. Its totient is φ = 60564000.

The previous prime is 61104847. The next prime is 61104881. The reversal of 61104863 is 36840116.

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 61104863 - 2⁴ = 61104847 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 (61104803) 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, 270263 + ... + 270488.

It is an arithmetic number, because the mean of its divisors is an integer number (15411432).

Almost surely, 2^61104863 is an apocalyptic number.

61104863 is a deficient number, since it is larger than the sum of its proper divisors (540865).

61104863 is a wasteful number, since it uses less digits than its factorization.

61104863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 540864.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 61104863 is about 7816.9599589610. The cubic root of 61104863 is about 393.8751590700.

Adding to 61104863 its reverse (36840116), we get a palindrome (97944979).

The spelling of 61104863 in words is "sixty-one million, one hundred four thousand, eight hundred sixty-three".