6764840648 has 8 divisors (see below), whose sum is σ = 12684076230. Its totient is φ = 3382420320.

The previous prime is 6764840639. The next prime is 6764840669. The reversal of 6764840648 is 8460484676.

It can be written as a sum of positive squares in only one way, i.e., 3628616644 + 3136224004 = 60238^2 + 56002^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-3 number, since 3×6764840648³ (a number of 30 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 6764840648.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 422802533 + ... + 422802548.

Almost surely, 2^6764840648 is an apocalyptic number.

It is an amenable number.

6764840648 is a deficient number, since it is larger than the sum of its proper divisors (5919235582).

6764840648 is a wasteful number, since it uses less digits than its factorization.

6764840648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 845605087 (or 845605083 counting only the distinct ones).

The product of its (nonzero) digits is 6193152, while the sum is 53.

The square root of 6764840648 is about 82248.6513445661. The cubic root of 6764840648 is about 1891.2656013800.

The spelling of 6764840648 in words is "six billion, seven hundred sixty-four million, eight hundred forty thousand, six hundred forty-eight".