61312208 has 20 divisors (see below), whose sum is σ = 118946628. Its totient is φ = 30616320.

The previous prime is 61312201. The next prime is 61312243. The reversal of 61312208 is 80221316.

61312208 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 12759184 + 48553024 = 3572^2 + 6968^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61312201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13238 + ... + 17258.

Almost surely, 2^61312208 is an apocalyptic number.

It is an amenable number.

61312208 is a deficient number, since it is larger than the sum of its proper divisors (57634420).

61312208 is a wasteful number, since it uses less digits than its factorization.

61312208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4982 (or 4976 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 61312208 is about 7830.2112359757. The cubic root of 61312208 is about 394.3201637217.

It can be divided in two parts, 613 and 12208, that added together give a palindrome (12821).

The spelling of 61312208 in words is "sixty-one million, three hundred twelve thousand, two hundred eight".