61165216 has 24 divisors (see below), whose sum is σ = 137622240. Its totient is φ = 26213568.

The previous prime is 61165207. The next prime is 61165217. The reversal of 61165216 is 61256116.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is not an unprimeable number, because it can be changed into a prime (61165217) 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, 136306 + ... + 136753.

It is an arithmetic number, because the mean of its divisors is an integer number (5734260).

Almost surely, 2^61165216 is an apocalyptic number.

It is an amenable number.

61165216 is an abundant number, since it is smaller than the sum of its proper divisors (76457024).

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

61165216 is a wasteful number, since it uses less digits than its factorization.

61165216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 273076 (or 273068 counting only the distinct ones).

The product of its digits is 2160, while the sum is 28.

The square root of 61165216 is about 7820.8193944113. The cubic root of 61165216 is about 394.0047926444.

The spelling of 61165216 in words is "sixty-one million, one hundred sixty-five thousand, two hundred sixteen".