61103712 has 48 divisors (see below), whose sum is σ = 169836912. Its totient is φ = 19169280.

The previous prime is 61103711. The next prime is 61103767. The reversal of 61103712 is 21730116.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61103711) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17089 + ... + 20352.

It is an arithmetic number, because the mean of its divisors is an integer number (3538269).

Almost surely, 2^61103712 is an apocalyptic number.

It is an amenable number.

61103712 is an abundant number, since it is smaller than the sum of its proper divisors (108733200).

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

61103712 is a wasteful number, since it uses less digits than its factorization.

61103712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37471 (or 37463 counting only the distinct ones).

The product of its (nonzero) digits is 252, while the sum is 21.

The square root of 61103712 is about 7816.8863366433. The cubic root of 61103712 is about 393.8726859818.

Adding to 61103712 its reverse (21730116), we get a palindrome (82833828).

The spelling of 61103712 in words is "sixty-one million, one hundred three thousand, seven hundred twelve".