87541963 has 4 divisors (see below), whose sum is σ = 89908000. Its totient is φ = 85175928.

The previous prime is 87541957. The next prime is 87541991. The reversal of 87541963 is 36914578.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 36914578 = 2 ⋅18457289.

It is a cyclic number.

It is not a de Polignac number, because 87541963 - 2⁵ = 87541931 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87541903) 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, 1182963 + ... + 1183036.

It is an arithmetic number, because the mean of its divisors is an integer number (22477000).

Almost surely, 2^87541963 is an apocalyptic number.

87541963 is a deficient number, since it is larger than the sum of its proper divisors (2366037).

87541963 is a wasteful number, since it uses less digits than its factorization.

87541963 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2366036.

The product of its digits is 181440, while the sum is 43.

The square root of 87541963 is about 9356.3862147733. The cubic root of 87541963 is about 444.0229592732.

The spelling of 87541963 in words is "eighty-seven million, five hundred forty-one thousand, nine hundred sixty-three".