61586216 has 8 divisors (see below), whose sum is σ = 115474170. Its totient is φ = 30793104.

The previous prime is 61586209. The next prime is 61586221. The reversal of 61586216 is 61268516.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 59752900 + 1833316 = 7730^2 + 1354^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3849131 + ... + 3849146.

Almost surely, 2^61586216 is an apocalyptic number.

It is an amenable number.

61586216 is a deficient number, since it is larger than the sum of its proper divisors (53887954).

61586216 is a wasteful number, since it uses less digits than its factorization.

61586216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7698283 (or 7698279 counting only the distinct ones).

The product of its digits is 17280, while the sum is 35.

The square root of 61586216 is about 7847.6885768996. The cubic root of 61586216 is about 394.9067044523.

The spelling of 61586216 in words is "sixty-one million, five hundred eighty-six thousand, two hundred sixteen".