61116655 has 16 divisors (see below), whose sum is σ = 75988224. Its totient is φ = 47139840.

The previous prime is 61116647. The next prime is 61116661. The reversal of 61116655 is 55661116.

It is not a de Polignac number, because 61116655 - 2³ = 61116647 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54157 + ... + 55273.

It is an arithmetic number, because the mean of its divisors is an integer number (4749264).

Almost surely, 2^61116655 is an apocalyptic number.

61116655 is a deficient number, since it is larger than the sum of its proper divisors (14871569).

61116655 is a wasteful number, since it uses less digits than its factorization.

61116655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1506.

The product of its digits is 5400, while the sum is 31.

The square root of 61116655 is about 7817.7141799889. The cubic root of 61116655 is about 393.9004940810.

The spelling of 61116655 in words is "sixty-one million, one hundred sixteen thousand, six hundred fifty-five".