61948881 has 20 divisors (see below), whose sum is σ = 95529984. Its totient is φ = 39965400.

The previous prime is 61948847. The next prime is 61948889. The reversal of 61948881 is 18884916.

61948881 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 61948881 - 2⁷ = 61948753 is a prime.

It is a super-2 number, since 2×61948881² = 7675327714304322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61948889) by changing a digit.

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 19 ways as a sum of consecutive naturals, for example, 9825 + ... + 14846.

Almost surely, 2^61948881 is an apocalyptic number.

It is an amenable number.

61948881 is a deficient number, since it is larger than the sum of its proper divisors (33581103).

61948881 is a wasteful number, since it uses less digits than its factorization.

61948881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24714 (or 24705 counting only the distinct ones).

The product of its digits is 110592, while the sum is 45.

The square root of 61948881 is about 7870.7611448957. The cubic root of 61948881 is about 395.6803550046.

The spelling of 61948881 in words is "sixty-one million, nine hundred forty-eight thousand, eight hundred eighty-one".