2884661 has 10 divisors (see below), whose sum is σ = 3155982. Its totient is φ = 2636400.

The previous prime is 2884657. The next prime is 2884663. The reversal of 2884661 is 1664882.

2884661 = T₄₅₈ + T₄₅₉ + ... + T₄₈₃.

It can be written as a sum of positive squares in 5 ways, for example, as 1716100 + 1168561 = 1310^2 + 1081^2 .

It is not a de Polignac number, because 2884661 - 2² = 2884657 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 (2884663) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 28511 + ... + 28611.

2^2884661 is an apocalyptic number.

It is an amenable number.

2884661 is a deficient number, since it is larger than the sum of its proper divisors (271321).

2884661 is an frugal number, since it uses more digits than its factorization.

2884661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153 (or 114 counting only the distinct ones).

The product of its digits is 18432, while the sum is 35.

The square root of 2884661 is about 1698.4289799694. The cubic root of 2884661 is about 142.3524439577.

The spelling of 2884661 in words is "two million, eight hundred eighty-four thousand, six hundred sixty-one".