2405678487 has 4 divisors (see below), whose sum is σ = 3207571320. Its totient is φ = 1603785656.

The previous prime is 2405678479. The next prime is 2405678497. The reversal of 2405678487 is 7848765042.

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 2405678487 - 2³ = 2405678479 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2405678437) 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, 400946412 + ... + 400946417.

It is an arithmetic number, because the mean of its divisors is an integer number (801892830).

Almost surely, 2^2405678487 is an apocalyptic number.

2405678487 is a deficient number, since it is larger than the sum of its proper divisors (801892833).

2405678487 is an equidigital number, since it uses as much as digits as its factorization.

2405678487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 801892832.

The product of its (nonzero) digits is 3010560, while the sum is 51.

The square root of 2405678487 is about 49047.7164300235. The cubic root of 2405678487 is about 1339.9210035483.

The spelling of 2405678487 in words is "two billion, four hundred five million, six hundred seventy-eight thousand, four hundred eighty-seven".