2587426405 has 8 divisors (see below), whose sum is σ = 3105809784. Its totient is φ = 2069342400.

The previous prime is 2587426379. The next prime is 2587426417. The reversal of 2587426405 is 5046247852.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 689430049 + 1897996356 = 26257^2 + 43566^2 .

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

It is not a de Polignac number, because 2587426405 - 2¹⁵ = 2587393637 is a prime.

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, 55366 + ... + 90775.

It is an arithmetic number, because the mean of its divisors is an integer number (388226223).

Almost surely, 2^2587426405 is an apocalyptic number.

It is an amenable number.

2587426405 is a deficient number, since it is larger than the sum of its proper divisors (518383379).

2587426405 is a wasteful number, since it uses less digits than its factorization.

2587426405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149687.

The product of its (nonzero) digits is 537600, while the sum is 43.

The square root of 2587426405 is about 50866.7514689114. The cubic root of 2587426405 is about 1372.8486741368.

The spelling of 2587426405 in words is "two billion, five hundred eighty-seven million, four hundred twenty-six thousand, four hundred five".