61043660 has 24 divisors (see below), whose sum is σ = 131174736. Its totient is φ = 23849280.

The previous prime is 61043627. The next prime is 61043669. The reversal of 61043660 is 6634016.

It is not an unprimeable number, because it can be changed into a prime (61043669) 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, 34631 + ... + 36350.

It is an arithmetic number, because the mean of its divisors is an integer number (5465614).

Almost surely, 2^61043660 is an apocalyptic number.

It is an amenable number.

61043660 is an abundant number, since it is smaller than the sum of its proper divisors (70131076).

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

61043660 is a wasteful number, since it uses less digits than its factorization.

61043660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71033 (or 71031 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 61043660 is about 7813.0442210447. The cubic root of 61043660 is about 393.7436125612.

Adding to 61043660 its reverse (6634016), we get a palindrome (67677676).

The spelling of 61043660 in words is "sixty-one million, forty-three thousand, six hundred sixty".