61875660 has 192 divisors, whose sum is σ = 220631040. Its totient is φ = 12583680.

The previous prime is 61875643. The next prime is 61875679. The reversal of 61875660 is 6657816.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 272467 + ... + 272693.

It is an arithmetic number, because the mean of its divisors is an integer number (1149120).

Almost surely, 2^61875660 is an apocalyptic number.

61875660 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61875660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (110315520).

61875660 is an abundant number, since it is smaller than the sum of its proper divisors (158755380).

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

61875660 is a wasteful number, since it uses less digits than its factorization.

61875660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 316 (or 314 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 39.

The square root of 61875660 is about 7866.1083135182. The cubic root of 61875660 is about 395.5244009722.

It can be divided in two parts, 618756 and 60, that added together give a palindrome (618816).

The spelling of 61875660 in words is "sixty-one million, eight hundred seventy-five thousand, six hundred sixty".