61116945 has 8 divisors (see below), whose sum is σ = 97787136. Its totient is φ = 32595696.

The previous prime is 61116943. The next prime is 61116953. The reversal of 61116945 is 54961116.

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

It is not a de Polignac number, because 61116945 - 2¹ = 61116943 is a prime.

It is a super-2 number, since 2×61116945² = 7470561932266050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (61116943) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2037217 + ... + 2037246.

It is an arithmetic number, because the mean of its divisors is an integer number (12223392).

Almost surely, 2^61116945 is an apocalyptic number.

It is an amenable number.

61116945 is a deficient number, since it is larger than the sum of its proper divisors (36670191).

61116945 is a wasteful number, since it uses less digits than its factorization.

61116945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4074471.

The product of its digits is 6480, while the sum is 33.

The square root of 61116945 is about 7817.7327275880. The cubic root of 61116945 is about 393.9011171025.

The spelling of 61116945 in words is "sixty-one million, one hundred sixteen thousand, nine hundred forty-five".