61108047 has 192 divisors, whose sum is σ = 137894400. Its totient is φ = 26127360.

The previous prime is 61107997. The next prime is 61108049. The reversal of 61108047 is 74080116.

It is a happy number.

61108047 is a `hidden beast` number, since 611 + 0 + 8 + 0 + 47 = 666.

It is not a de Polignac number, because 61108047 - 2⁶ = 61107983 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a nialpdrome in base 13.

It is a self number, because there is not a number n which added to its sum of digits gives 61108047.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61108049) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 3216204 + ... + 3216222.

It is an arithmetic number, because the mean of its divisors is an integer number (718200).

Almost surely, 2^61108047 is an apocalyptic number.

61108047 is an abundant number, since it is smaller than the sum of its proper divisors (76786353).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61108047 is a wasteful number, since it uses less digits than its factorization.

61108047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83 (or 70 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 27.

The square root of 61108047 is about 7817.1636160439. The cubic root of 61108047 is about 393.8820001879.

The spelling of 61108047 in words is "sixty-one million, one hundred eight thousand, forty-seven".