61819168 has 24 divisors (see below), whose sum is σ = 122266368. Its totient is φ = 30767424.

The previous prime is 61819139. The next prime is 61819181. The reversal of 61819168 is 86191816.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 61819168.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2805 + ... + 11467.

It is an arithmetic number, because the mean of its divisors is an integer number (5094432).

Almost surely, 2^61819168 is an apocalyptic number.

It is an amenable number.

61819168 is a deficient number, since it is larger than the sum of its proper divisors (60447200).

61819168 is a wasteful number, since it uses less digits than its factorization.

61819168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8896 (or 8888 counting only the distinct ones).

The product of its digits is 20736, while the sum is 40.

The square root of 61819168 is about 7862.5166454514. The cubic root of 61819168 is about 395.4039940795.

The spelling of 61819168 in words is "sixty-one million, eight hundred nineteen thousand, one hundred sixty-eight".