61233660 has 72 divisors (see below), whose sum is σ = 196677936. Its totient is φ = 15367680.

The previous prime is 61233647. The next prime is 61233661. The reversal of 61233660 is 6633216.

It is a super-2 number, since 2×61233660² = 7499122233991200, which contains 22 as substring.

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61233661) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6946 + ... + 13065.

It is an arithmetic number, because the mean of its divisors is an integer number (2731638).

Almost surely, 2^61233660 is an apocalyptic number.

61233660 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

61233660 is an abundant number, since it is smaller than the sum of its proper divisors (135444276).

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

61233660 is a wasteful number, since it uses less digits than its factorization.

61233660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20043 (or 20038 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 27.

The square root of 61233660 is about 7825.1939273094. The cubic root of 61233660 is about 394.1517019132.

Adding to 61233660 its reverse (6633216), we get a palindrome (67866876).

The spelling of 61233660 in words is "sixty-one million, two hundred thirty-three thousand, six hundred sixty".