36881587 has 4 divisors (see below), whose sum is σ = 37577520. Its totient is φ = 36185656.

The previous prime is 36881561. The next prime is 36881597. The reversal of 36881587 is 78518863.

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 36881587 - 2⁷ = 36881459 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (36881597) 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, 347887 + ... + 347992.

It is an arithmetic number, because the mean of its divisors is an integer number (9394380).

Almost surely, 2^36881587 is an apocalyptic number.

36881587 is a deficient number, since it is larger than the sum of its proper divisors (695933).

36881587 is an equidigital number, since it uses as much as digits as its factorization.

36881587 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 695932.

The product of its digits is 322560, while the sum is 46.

The square root of 36881587 is about 6073.0212415239. The cubic root of 36881587 is about 332.8663292493.

The spelling of 36881587 in words is "thirty-six million, eight hundred eighty-one thousand, five hundred eighty-seven".