65980016 has 30 divisors (see below), whose sum is σ = 130176936. Its totient is φ = 32390400.

The previous prime is 65980003. The next prime is 65980021. The reversal of 65980016 is 61008956.

It is a super-2 number, since 2×65980016² = 8706725022720512, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 273656 + ... + 273896.

Almost surely, 2^65980016 is an apocalyptic number.

It is an amenable number.

65980016 is a deficient number, since it is larger than the sum of its proper divisors (64196920).

65980016 is an equidigital number, since it uses as much as digits as its factorization.

65980016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 561 (or 314 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 35.

The square root of 65980016 is about 8122.8083813420. The cubic root of 65980016 is about 404.0832099950.

The spelling of 65980016 in words is "sixty-five million, nine hundred eighty thousand, sixteen".