65865677670 has 48 divisors (see below), whose sum is σ = 184423900752. Its totient is φ = 16213089600.

The previous prime is 65865677621. The next prime is 65865677677. The reversal of 65865677670 is 7677656856.

65865677670 is a `hidden beast` number, since 6 + 5 + 8 + 6 + 567 + 7 + 67 + 0 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 65865677598 and 65865677607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65865677677) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 28146556 + ... + 28148895.

It is an arithmetic number, because the mean of its divisors is an integer number (3842164599).

Almost surely, 2^65865677670 is an apocalyptic number.

65865677670 is an abundant number, since it is smaller than the sum of its proper divisors (118558223082).

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

65865677670 is a wasteful number, since it uses less digits than its factorization.

65865677670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56295477 (or 56295474 counting only the distinct ones).

The product of its (nonzero) digits is 88905600, while the sum is 63.

The spelling of 65865677670 in words is "sixty-five billion, eight hundred sixty-five million, six hundred seventy-seven thousand, six hundred seventy".