272006661 has 4 divisors (see below), whose sum is σ = 362675552. Its totient is φ = 181337772.

The previous prime is 272006639. The next prime is 272006663. The reversal of 272006661 is 166600272.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 272006661 - 2⁵ = 272006629 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (272006663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45334441 + ... + 45334446.

It is an arithmetic number, because the mean of its divisors is an integer number (90668888).

Almost surely, 2^272006661 is an apocalyptic number.

It is an amenable number.

272006661 is a deficient number, since it is larger than the sum of its proper divisors (90668891).

272006661 is an equidigital number, since it uses as much as digits as its factorization.

272006661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90668890.

The product of its (nonzero) digits is 6048, while the sum is 30.

The square root of 272006661 is about 16492.6244424591. The cubic root of 272006661 is about 647.9276491962.

The spelling of 272006661 in words is "two hundred seventy-two million, six thousand, six hundred sixty-one".