61616312 has 16 divisors (see below), whose sum is σ = 115884600. Its totient is φ = 30713760.

The previous prime is 61616311. The next prime is 61616327. The reversal of 61616312 is 21361616.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61616311) 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, 8987 + ... + 14282.

Almost surely, 2^61616312 is an apocalyptic number.

It is an amenable number.

61616312 is a deficient number, since it is larger than the sum of its proper divisors (54268288).

61616312 is a wasteful number, since it uses less digits than its factorization.

61616312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23606 (or 23602 counting only the distinct ones).

The product of its digits is 1296, while the sum is 26.

The square root of 61616312 is about 7849.6058499774. The cubic root of 61616312 is about 394.9710217485.

Adding to 61616312 its reverse (21361616), we get a palindrome (82977928).

The spelling of 61616312 in words is "sixty-one million, six hundred sixteen thousand, three hundred twelve".