61263860 has 48 divisors (see below), whose sum is σ = 151019904. Its totient is φ = 20435328.

The previous prime is 61263857. The next prime is 61263893. The reversal of 61263860 is 6836216.

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 15 ways as a sum of consecutive naturals, for example, 734 + ... + 11093.

It is an arithmetic number, because the mean of its divisors is an integer number (3146248).

Almost surely, 2^61263860 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61263860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75509952).

61263860 is an abundant number, since it is smaller than the sum of its proper divisors (89756044).

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

61263860 is a wasteful number, since it uses less digits than its factorization.

61263860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11880 (or 11878 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 61263860 is about 7827.1233540810. The cubic root of 61263860 is about 394.2164888569.

The spelling of 61263860 in words is "sixty-one million, two hundred sixty-three thousand, eight hundred sixty".