61007872 has 24 divisors (see below), whose sum is σ = 121990050. Its totient is φ = 30502912.

The previous prime is 61007867. The next prime is 61007873. The reversal of 61007872 is 27870016.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 60466176 + 541696 = 7776^2 + 736^2 .

It is not an unprimeable number, because it can be changed into a prime (61007873) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12847 + ... + 16942.

Almost surely, 2^61007872 is an apocalyptic number.

It is an amenable number.

61007872 is a deficient number, since it is larger than the sum of its proper divisors (60982178).

61007872 is an equidigital number, since it uses as much as digits as its factorization.

61007872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29811 (or 29791 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 31.

The square root of 61007872 is about 7810.7536128084. The cubic root of 61007872 is about 393.6666509730. Note that the first 4 decimals are identical.

Adding to 61007872 its reverse (27870016), we get a palindrome (88877888).

The spelling of 61007872 in words is "sixty-one million, seven thousand, eight hundred seventy-two".