36445987 has 4 divisors (see below), whose sum is σ = 37621696. Its totient is φ = 35270280.

The previous prime is 36445963. The next prime is 36445993. The reversal of 36445987 is 78954463.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 78954463 = 7 ⋅11279209.

It is a cyclic number.

It is not a de Polignac number, because 36445987 - 2⁷ = 36445859 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (36445957) 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, 587808 + ... + 587869.

It is an arithmetic number, because the mean of its divisors is an integer number (9405424).

Almost surely, 2^36445987 is an apocalyptic number.

36445987 is a deficient number, since it is larger than the sum of its proper divisors (1175709).

36445987 is a wasteful number, since it uses less digits than its factorization.

36445987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1175708.

The product of its digits is 725760, while the sum is 46.

The square root of 36445987 is about 6037.0511841461. The cubic root of 36445987 is about 331.5506665147.

The spelling of 36445987 in words is "thirty-six million, four hundred forty-five thousand, nine hundred eighty-seven".