2729529666 has 24 divisors (see below), whose sum is σ = 5937002604. Its totient is φ = 906301440.

The previous prime is 2729529643. The next prime is 2729529667. The reversal of 2729529666 is 6669259272.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 2512114641 + 217415025 = 50121^2 + 14745^2 .

It is not an unprimeable number, because it can be changed into a prime (2729529667) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 290395 + ... + 299646.

Almost surely, 2^2729529666 is an apocalyptic number.

2729529666 is an abundant number, since it is smaller than the sum of its proper divisors (3207472938).

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

2729529666 is a wasteful number, since it uses less digits than its factorization.

2729529666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 590306 (or 590303 counting only the distinct ones).

The product of its digits is 4898880, while the sum is 54.

The square root of 2729529666 is about 52244.9008612324. The cubic root of 2729529666 is about 1397.5347202458.

The spelling of 2729529666 in words is "two billion, seven hundred twenty-nine million, five hundred twenty-nine thousand, six hundred sixty-six".