2721550665 has 8 divisors (see below), whose sum is σ = 4354481088. Its totient is φ = 1451493680.

The previous prime is 2721550627. The next prime is 2721550679. The reversal of 2721550665 is 5660551272.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2721550665 - 2⁷ = 2721550537 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 90718341 + ... + 90718370.

It is an arithmetic number, because the mean of its divisors is an integer number (544310136).

Almost surely, 2^2721550665 is an apocalyptic number.

It is an amenable number.

2721550665 is a deficient number, since it is larger than the sum of its proper divisors (1632930423).

2721550665 is a wasteful number, since it uses less digits than its factorization.

2721550665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181436719.

The product of its (nonzero) digits is 126000, while the sum is 39.

The square root of 2721550665 is about 52168.4834454673. The cubic root of 2721550665 is about 1396.1716265388.

The spelling of 2721550665 in words is "two billion, seven hundred twenty-one million, five hundred fifty thousand, six hundred sixty-five".