361877987 has 4 divisors (see below), whose sum is σ = 361943040. Its totient is φ = 361812936.

The previous prime is 361877977. The next prime is 361878001. The reversal of 361877987 is 789778163.

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 361877987 - 2¹² = 361873891 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (361877977) 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, 23312 + ... + 35597.

It is an arithmetic number, because the mean of its divisors is an integer number (90485760).

Almost surely, 2^361877987 is an apocalyptic number.

361877987 is a deficient number, since it is larger than the sum of its proper divisors (65053).

361877987 is an equidigital number, since it uses as much as digits as its factorization.

361877987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65052.

The product of its digits is 3556224, while the sum is 56.

The square root of 361877987 is about 19023.0908897582. The cubic root of 361877987 is about 712.6135160061.

The spelling of 361877987 in words is "three hundred sixty-one million, eight hundred seventy-seven thousand, nine hundred eighty-seven".