2087405 has 8 divisors (see below), whose sum is σ = 2552472. Its totient is φ = 1638208.

The previous prime is 2087399. The next prime is 2087419. The reversal of 2087405 is 5047802.

It can be written as a sum of positive squares in 4 ways, for example, as 121801 + 1965604 = 349^2 + 1402^2 .

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 2087405 - 2⁴ = 2087389 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3674 + ... + 4203.

It is an arithmetic number, because the mean of its divisors is an integer number (319059).

2^2087405 is an apocalyptic number.

It is an amenable number.

2087405 is a deficient number, since it is larger than the sum of its proper divisors (465067).

2087405 is an equidigital number, since it uses as much as digits as its factorization.

2087405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7935.

The product of its (nonzero) digits is 2240, while the sum is 26.

The square root of 2087405 is about 1444.7854512003. The cubic root of 2087405 is about 127.8013887615.

The spelling of 2087405 in words is "two million, eighty-seven thousand, four hundred five".