61261884 has 18 divisors (see below), whose sum is σ = 154856520. Its totient is φ = 20420616.

The previous prime is 61261877. The next prime is 61261901. The reversal of 61261884 is 48816216.

61261884 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 1701719 = 61261884 / (6 + 1 + 2 + 6 + 1 + 8 + 8 + 4).

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 850824 + ... + 850895.

It is an arithmetic number, because the mean of its divisors is an integer number (8603140).

Almost surely, 2^61261884 is an apocalyptic number.

It is an amenable number.

61261884 is an abundant number, since it is smaller than the sum of its proper divisors (93594636).

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

61261884 is a wasteful number, since it uses less digits than its factorization.

61261884 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1701729 (or 1701724 counting only the distinct ones).

The product of its digits is 18432, while the sum is 36.

The square root of 61261884 is about 7826.9971253348. The cubic root of 61261884 is about 394.2122504682.

The spelling of 61261884 in words is "sixty-one million, two hundred sixty-one thousand, eight hundred eighty-four".