65680670 has 32 divisors (see below), whose sum is σ = 129392640. Its totient is φ = 23806240.

The previous prime is 65680633. The next prime is 65680691. The reversal of 65680670 is 7608656.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41351 + ... + 42909.

It is an arithmetic number, because the mean of its divisors is an integer number (4043520).

Almost surely, 2^65680670 is an apocalyptic number.

65680670 is a deficient number, since it is larger than the sum of its proper divisors (63711970).

65680670 is a wasteful number, since it uses less digits than its factorization.

65680670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1960.

The product of its (nonzero) digits is 60480, while the sum is 38.

The square root of 65680670 is about 8104.3611716162. The cubic root of 65680670 is about 403.4711858700.

The spelling of 65680670 in words is "sixty-five million, six hundred eighty thousand, six hundred seventy".