61041660 has 24 divisors (see below), whose sum is σ = 170916816. Its totient is φ = 16277760.

The previous prime is 61041653. The next prime is 61041671. The reversal of 61041660 is 6614016.

It is a self number, because there is not a number n which added to its sum of digits gives 61041660.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 508621 + ... + 508740.

It is an arithmetic number, because the mean of its divisors is an integer number (7121534).

Almost surely, 2^61041660 is an apocalyptic number.

61041660 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

61041660 is an abundant number, since it is smaller than the sum of its proper divisors (109875156).

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

61041660 is a wasteful number, since it uses less digits than its factorization.

61041660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1017373 (or 1017371 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 61041660 is about 7812.9162289122. The cubic root of 61041660 is about 393.7393123831.

Adding to 61041660 its reverse (6614016), we get a palindrome (67655676).

The spelling of 61041660 in words is "sixty-one million, forty-one thousand, six hundred sixty".