61616912 has 30 divisors (see below), whose sum is σ = 138875598. Its totient is φ = 26406912.

The previous prime is 61616911. The next prime is 61616923. The reversal of 61616912 is 21961616.

It can be written as a sum of positive squares in only one way, i.e., 51782416 + 9834496 = 7196^2 + 3136^2 .

It is not an unprimeable number, because it can be changed into a prime (61616911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 38513 + ... + 40080.

Almost surely, 2^61616912 is an apocalyptic number.

It is an amenable number.

61616912 is an abundant number, since it is smaller than the sum of its proper divisors (77258686).

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

61616912 is a wasteful number, since it uses less digits than its factorization.

61616912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78615 (or 78602 counting only the distinct ones).

The product of its digits is 3888, while the sum is 32.

The square root of 61616912 is about 7849.6440683639. The cubic root of 61616912 is about 394.9723037783.

The spelling of 61616912 in words is "sixty-one million, six hundred sixteen thousand, nine hundred twelve".