65516004 has 36 divisors (see below), whose sum is σ = 169465296. Its totient is φ = 21330288.

The previous prime is 65515997. The next prime is 65516023. The reversal of 65516004 is 40061556.

It is a happy number.

65516004 is a `hidden beast` number, since 6 + 5 + 51 + 600 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19614 + ... + 22709.

Almost surely, 2^65516004 is an apocalyptic number.

It is an amenable number.

65516004 is an abundant number, since it is smaller than the sum of its proper divisors (103949292).

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

65516004 is a wasteful number, since it uses less digits than its factorization.

65516004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42376 (or 42371 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 65516004 is about 8094.1956981531. The cubic root of 65516004 is about 403.1337269429.

The spelling of 65516004 in words is "sixty-five million, five hundred sixteen thousand, four".