61023660 has 24 divisors (see below), whose sum is σ = 170866416. Its totient is φ = 16272960.

The previous prime is 61023643. The next prime is 61023661. The reversal of 61023660 is 6632016.

61023660 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 61023660.

It is not an unprimeable number, because it can be changed into a prime (61023661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 508471 + ... + 508590.

It is an arithmetic number, because the mean of its divisors is an integer number (7119434).

Almost surely, 2^61023660 is an apocalyptic number.

61023660 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

61023660 is an abundant number, since it is smaller than the sum of its proper divisors (109842756).

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

61023660 is a wasteful number, since it uses less digits than its factorization.

61023660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1017073 (or 1017071 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 24.

The square root of 61023660 is about 7811.7642053508. The cubic root of 61023660 is about 393.7006065530.

Adding to 61023660 its reverse (6632016), we get a palindrome (67655676).

The spelling of 61023660 in words is "sixty-one million, twenty-three thousand, six hundred sixty".