646962067 has 8 divisors (see below), whose sum is σ = 652857632. Its totient is φ = 641088000.

The previous prime is 646962061. The next prime is 646962077. The reversal of 646962067 is 760269646.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 646962067 - 2³ = 646962059 is a prime.

It is a super-2 number, since 2×646962067² = 837119832273824978, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (646962061) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58483 + ... + 68659.

It is an arithmetic number, because the mean of its divisors is an integer number (81607204).

Almost surely, 2^646962067 is an apocalyptic number.

646962067 is a deficient number, since it is larger than the sum of its proper divisors (5895565).

646962067 is a wasteful number, since it uses less digits than its factorization.

646962067 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10749.

The product of its (nonzero) digits is 653184, while the sum is 46.

The square root of 646962067 is about 25435.4490229679. The cubic root of 646962067 is about 864.8874710778.

The spelling of 646962067 in words is "six hundred forty-six million, nine hundred sixty-two thousand, sixty-seven".