2772661 has 8 divisors (see below), whose sum is σ = 2913120. Its totient is φ = 2635248.

The previous prime is 2772647. The next prime is 2772697. The reversal of 2772661 is 1662772.

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

It is a cyclic number.

It is not a de Polignac number, because 2772661 - 2⁵ = 2772629 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 (2772631) 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, 1230 + ... + 2656.

It is an arithmetic number, because the mean of its divisors is an integer number (364140).

2^2772661 is an apocalyptic number.

It is an amenable number.

2772661 is a deficient number, since it is larger than the sum of its proper divisors (140459).

2772661 is a wasteful number, since it uses less digits than its factorization.

2772661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1523.

The product of its digits is 7056, while the sum is 31.

The square root of 2772661 is about 1665.1309257833. The cubic root of 2772661 is about 140.4857446815.

The spelling of 2772661 in words is "two million, seven hundred seventy-two thousand, six hundred sixty-one".