2662861 has 4 divisors (see below), whose sum is σ = 2724832. Its totient is φ = 2600892.

The previous prime is 2662841. The next prime is 2662883. The reversal of 2662861 is 1682662.

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 a cyclic number.

It is not a de Polignac number, because 2662861 - 2¹⁵ = 2630093 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 (2662811) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30921 + ... + 31006.

It is an arithmetic number, because the mean of its divisors is an integer number (681208).

2^2662861 is an apocalyptic number.

It is an amenable number.

2662861 is a deficient number, since it is larger than the sum of its proper divisors (61971).

2662861 is an equidigital number, since it uses as much as digits as its factorization.

2662861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61970.

The product of its digits is 6912, while the sum is 31.

The square root of 2662861 is about 1631.8275031387. The cubic root of 2662861 is about 138.6062559167.

The spelling of 2662861 in words is "two million, six hundred sixty-two thousand, eight hundred sixty-one".