61712072 has 16 divisors (see below), whose sum is σ = 119443200. Its totient is φ = 29860560.

The previous prime is 61712071. The next prime is 61712113. The reversal of 61712072 is 27021716.

It is not an unprimeable number, because it can be changed into a prime (61712071) 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, 124172 + ... + 124667.

It is an arithmetic number, because the mean of its divisors is an integer number (7465200).

Almost surely, 2^61712072 is an apocalyptic number.

61712072 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

It is an amenable number.

61712072 is a deficient number, since it is larger than the sum of its proper divisors (57731128).

61712072 is a wasteful number, since it uses less digits than its factorization.

61712072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 248876 (or 248872 counting only the distinct ones).

The product of its (nonzero) digits is 1176, while the sum is 26.

The square root of 61712072 is about 7855.7031512144. The cubic root of 61712072 is about 395.1755284612.

Adding to 61712072 its reverse (27021716), we get a palindrome (88733788).

The spelling of 61712072 in words is "sixty-one million, seven hundred twelve thousand, seventy-two".