65780044 has 24 divisors (see below), whose sum is σ = 127713600. Its totient is φ = 29392080.

The previous prime is 65780027. The next prime is 65780053. The reversal of 65780044 is 44008756.

It is a junction number, because it is equal to n+sod(n) for n = 65779991 and 65780009.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10074 + ... + 15265.

It is an arithmetic number, because the mean of its divisors is an integer number (5321400).

Almost surely, 2^65780044 is an apocalyptic number.

It is an amenable number.

65780044 is a deficient number, since it is larger than the sum of its proper divisors (61933556).

65780044 is a wasteful number, since it uses less digits than its factorization.

65780044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25413 (or 25411 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 34.

The square root of 65780044 is about 8110.4897509337. The cubic root of 65780044 is about 403.6745655542.

The spelling of 65780044 in words is "sixty-five million, seven hundred eighty thousand, forty-four".