2864405 has 4 divisors (see below), whose sum is σ = 3437292. Its totient is φ = 2291520.

The previous prime is 2864401. The next prime is 2864419. The reversal of 2864405 is 5044682.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1745041 + 1119364 = 1321^2 + 1058^2 .

It is not a de Polignac number, because 2864405 - 2² = 2864401 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 (2864401) 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, 286436 + ... + 286445.

It is an arithmetic number, because the mean of its divisors is an integer number (859323).

2^2864405 is an apocalyptic number.

It is an amenable number.

2864405 is a deficient number, since it is larger than the sum of its proper divisors (572887).

2864405 is an equidigital number, since it uses as much as digits as its factorization.

2864405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 572886.

The product of its (nonzero) digits is 7680, while the sum is 29.

The square root of 2864405 is about 1692.4553169877. The cubic root of 2864405 is about 142.0184628510.

The spelling of 2864405 in words is "two million, eight hundred sixty-four thousand, four hundred five".