65776416 has 48 divisors (see below), whose sum is σ = 173111904. Its totient is φ = 21868544.

The previous prime is 65776411. The next prime is 65776433. The reversal of 65776416 is 61467756.

It is a tau number, because it is divible by the number of its divisors (48).

It is not an unprimeable number, because it can be changed into a prime (65776411) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53440 + ... + 54656.

It is an arithmetic number, because the mean of its divisors is an integer number (3606498).

Almost surely, 2^65776416 is an apocalyptic number.

It is an amenable number.

65776416 is an abundant number, since it is smaller than the sum of its proper divisors (107335488).

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

65776416 is a wasteful number, since it uses less digits than its factorization.

65776416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1793 (or 1785 counting only the distinct ones).

The product of its digits is 211680, while the sum is 42.

The square root of 65776416 is about 8110.2660868803. The cubic root of 65776416 is about 403.6671440620.

The spelling of 65776416 in words is "sixty-five million, seven hundred seventy-six thousand, four hundred sixteen".