61442868 has 48 divisors (see below), whose sum is σ = 148736000. Its totient is φ = 19720800.

The previous prime is 61442863. The next prime is 61442873. The reversal of 61442868 is 86824416.

61442868 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (61442863) and next prime (61442873).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61442863) 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 15 ways as a sum of consecutive naturals, for example, 122883 + ... + 123381.

Almost surely, 2^61442868 is an apocalyptic number.

It is an amenable number.

61442868 is an abundant number, since it is smaller than the sum of its proper divisors (87293132).

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

61442868 is a wasteful number, since it uses less digits than its factorization.

61442868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 868 (or 866 counting only the distinct ones).

The product of its digits is 73728, while the sum is 39.

The square root of 61442868 is about 7838.5501210364. The cubic root of 61442868 is about 394.6000716378.

The spelling of 61442868 in words is "sixty-one million, four hundred forty-two thousand, eight hundred sixty-eight".