6764404040 has 32 divisors (see below), whose sum is σ = 16115199480. Its totient is φ = 2546598912.

The previous prime is 6764404033. The next prime is 6764404043. The reversal of 6764404040 is 404044676.

It can be written as a sum of positive squares in 4 ways, for example, as 6521854564 + 242549476 = 80758^2 + 15574^2 .

It is not an unprimeable number, because it can be changed into a prime (6764404043) 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, 4973147 + ... + 4974506.

Almost surely, 2^6764404040 is an apocalyptic number.

It is an amenable number.

6764404040 is an abundant number, since it is smaller than the sum of its proper divisors (9350795440).

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

6764404040 is a wasteful number, since it uses less digits than its factorization.

6764404040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9947681 (or 9947677 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 35.

The square root of 6764404040 is about 82245.9971062422. The cubic root of 6764404040 is about 1891.2249125941.

The spelling of 6764404040 in words is "six billion, seven hundred sixty-four million, four hundred four thousand, forty".