2646446064 has 40 divisors (see below), whose sum is σ = 6865050192. Its totient is φ = 878484480.

The previous prime is 2646446059. The next prime is 2646446107. The reversal of 2646446064 is 4606446462.

It is a super-2 number, since 2×2646446064² = 14007353539322184192, 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 7 ways as a sum of consecutive naturals, for example, 102819 + ... + 125954.

Almost surely, 2^2646446064 is an apocalyptic number.

2646446064 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

2646446064 is an abundant number, since it is smaller than the sum of its proper divisors (4218604128).

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

2646446064 is a wasteful number, since it uses less digits than its factorization.

2646446064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229025 (or 229019 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 42.

The square root of 2646446064 is about 51443.6202458575. The cubic root of 2646446064 is about 1383.2086062154.

The spelling of 2646446064 in words is "two billion, six hundred forty-six million, four hundred forty-six thousand, sixty-four".