2587078399 has 4 divisors (see below), whose sum is σ = 2723240440. Its totient is φ = 2450916360.

The previous prime is 2587078357. The next prime is 2587078409. The reversal of 2587078399 is 9938707852.

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

It is a cyclic number.

It is not a de Polignac number, because 2587078399 - 2¹¹ = 2587076351 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 (2587078349) 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, 68080992 + ... + 68081029.

It is an arithmetic number, because the mean of its divisors is an integer number (680810110).

Almost surely, 2^2587078399 is an apocalyptic number.

2587078399 is a deficient number, since it is larger than the sum of its proper divisors (136162041).

2587078399 is a wasteful number, since it uses less digits than its factorization.

2587078399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136162040.

The product of its (nonzero) digits is 7620480, while the sum is 58.

The square root of 2587078399 is about 50863.3305928741. The cubic root of 2587078399 is about 1372.7871224992.

The spelling of 2587078399 in words is "two billion, five hundred eighty-seven million, seventy-eight thousand, three hundred ninety-nine".