61616372 has 12 divisors (see below), whose sum is σ = 108453156. Its totient is φ = 30629760.

The previous prime is 61616371. The next prime is 61616383. The reversal of 61616372 is 27361616.

61616372 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 25664356 + 35952016 = 5066^2 + 5996^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61616371) 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, 43829 + ... + 45212.

It is an arithmetic number, because the mean of its divisors is an integer number (9037763).

Almost surely, 2^61616372 is an apocalyptic number.

It is an amenable number.

61616372 is a deficient number, since it is larger than the sum of its proper divisors (46836784).

61616372 is a wasteful number, since it uses less digits than its factorization.

61616372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89218 (or 89216 counting only the distinct ones).

The product of its digits is 9072, while the sum is 32.

The square root of 61616372 is about 7849.6096718245. The cubic root of 61616372 is about 394.9711499519.

Adding to 61616372 its reverse (27361616), we get a palindrome (88977988).

The spelling of 61616372 in words is "sixty-one million, six hundred sixteen thousand, three hundred seventy-two".