6764506749 has 160 divisors (see below), whose sum is σ = 14284892160. Its totient is φ = 3072297600.

The previous prime is 6764506739. The next prime is 6764506757. The reversal of 6764506749 is 9476054676.

6764506749 is a `hidden beast` number, since 6 + 7 + 64 + 506 + 74 + 9 = 666.

It is not a de Polignac number, because 6764506749 - 2⁵ = 6764506717 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6764506695 and 6764506704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6764506739) by changing a digit.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 1538344 + ... + 1542734.

It is an arithmetic number, because the mean of its divisors is an integer number (89280576).

Almost surely, 2^6764506749 is an apocalyptic number.

It is an amenable number.

6764506749 is an abundant number, since it is smaller than the sum of its proper divisors (7520385411).

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

6764506749 is a wasteful number, since it uses less digits than its factorization.

6764506749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4453 (or 4444 counting only the distinct ones).

The product of its (nonzero) digits is 7620480, while the sum is 54.

The square root of 6764506749 is about 82246.6215050807. The cubic root of 6764506749 is about 1891.2344845059.

The spelling of 6764506749 in words is "six billion, seven hundred sixty-four million, five hundred six thousand, seven hundred forty-nine".