6729566740 has 24 divisors (see below), whose sum is σ = 15219174600. Its totient is φ = 2484763008.

The previous prime is 6729566681. The next prime is 6729566743. The reversal of 6729566740 is 476659276.

It can be written as a sum of positive squares in 4 ways, for example, as 18352656 + 6711214084 = 4284^2 + 81922^2 .

It is a super-2 number, since 2×6729566740² = 90574137016228455200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (52).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6729566743) 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, 12941215 + ... + 12941734.

It is an arithmetic number, because the mean of its divisors is an integer number (634132275).

Almost surely, 2^6729566740 is an apocalyptic number.

It is an amenable number.

6729566740 is an abundant number, since it is smaller than the sum of its proper divisors (8489607860).

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

6729566740 is a wasteful number, since it uses less digits than its factorization.

6729566740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25882971 (or 25882969 counting only the distinct ones).

The product of its (nonzero) digits is 3810240, while the sum is 52.

The square root of 6729566740 is about 82033.9365141037. The cubic root of 6729566740 is about 1887.9726625871.

The spelling of 6729566740 in words is "six billion, seven hundred twenty-nine million, five hundred sixty-six thousand, seven hundred forty".