65670056 has 8 divisors (see below), whose sum is σ = 123131370. Its totient is φ = 32835024.

The previous prime is 65670053. The next prime is 65670071. The reversal of 65670056 is 65007656.

65670056 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 63520900 + 2149156 = 7970^2 + 1466^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 65669998 and 65670025.

It is not an unprimeable number, because it can be changed into a prime (65670053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4104371 + ... + 4104386.

Almost surely, 2^65670056 is an apocalyptic number.

It is an amenable number.

65670056 is a deficient number, since it is larger than the sum of its proper divisors (57461314).

65670056 is a wasteful number, since it uses less digits than its factorization.

65670056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8208763 (or 8208759 counting only the distinct ones).

The product of its (nonzero) digits is 37800, while the sum is 35.

The square root of 65670056 is about 8103.7063125461. The cubic root of 65670056 is about 403.4494510437.

The spelling of 65670056 in words is "sixty-five million, six hundred seventy thousand, fifty-six".