61719168 has 64 divisors (see below), whose sum is σ = 187369920. Its totient is φ = 17633280.

The previous prime is 61719157. The next prime is 61719173. The reversal of 61719168 is 86191716.

It is a tau number, because it is divible by the number of its divisors (64).

It is a super-2 number, since 2×61719168² = 7618511397224448, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8793 + ... + 14168.

It is an arithmetic number, because the mean of its divisors is an integer number (2927655).

Almost surely, 2^61719168 is an apocalyptic number.

It is an amenable number.

61719168 is an abundant number, since it is smaller than the sum of its proper divisors (125650752).

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

61719168 is a wasteful number, since it uses less digits than its factorization.

61719168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22985 (or 22973 counting only the distinct ones).

The product of its digits is 18144, while the sum is 39.

The square root of 61719168 is about 7856.1547846259. The cubic root of 61719168 is about 395.1906743799.

The spelling of 61719168 in words is "sixty-one million, seven hundred nineteen thousand, one hundred sixty-eight".