646068696 has 64 divisors (see below), whose sum is σ = 1987910400. Its totient is φ = 170391168.

The previous prime is 646068649. The next prime is 646068727. The reversal of 646068696 is 696860646.

It is a super-2 number, since 2×646068696² = 834809519902280832, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 145726 + ... + 150093.

It is an arithmetic number, because the mean of its divisors is an integer number (31061100).

Almost surely, 2^646068696 is an apocalyptic number.

It is an amenable number.

646068696 is an abundant number, since it is smaller than the sum of its proper divisors (1341841704).

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

646068696 is a wasteful number, since it uses less digits than its factorization.

646068696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 295848 (or 295844 counting only the distinct ones).

The product of its (nonzero) digits is 2239488, while the sum is 51.

The square root of 646068696 is about 25417.8814223373. The cubic root of 646068696 is about 864.4891884232.

The spelling of 646068696 in words is "six hundred forty-six million, sixty-eight thousand, six hundred ninety-six".