61891060 has 48 divisors (see below), whose sum is σ = 162046080. Its totient is φ = 19290240.

The previous prime is 61891031. The next prime is 61891103. The reversal of 61891060 is 6019816.

It is a happy number.

61891060 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 15 ways as a sum of consecutive naturals, for example, 18555 + ... + 21634.

It is an arithmetic number, because the mean of its divisors is an integer number (3375960).

Almost surely, 2^61891060 is an apocalyptic number.

It is an amenable number.

61891060 is an abundant number, since it is smaller than the sum of its proper divisors (100155020).

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

61891060 is a wasteful number, since it uses less digits than its factorization.

61891060 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40216 (or 40214 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 31.

The square root of 61891060 is about 7867.0871356557. The cubic root of 61891060 is about 395.5572117766.

The spelling of 61891060 in words is "sixty-one million, eight hundred ninety-one thousand, sixty".