87622541 has 4 divisors (see below), whose sum is σ = 87688284. Its totient is φ = 87556800.

The previous prime is 87622517. The next prime is 87622559. The reversal of 87622541 is 14522678.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 39375625 + 48246916 = 6275^2 + 6946^2 .

It is a cyclic number.

It is not a de Polignac number, because 87622541 - 2⁶ = 87622477 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87622441) 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, 30830 + ... + 33551.

It is an arithmetic number, because the mean of its divisors is an integer number (21922071).

Almost surely, 2^87622541 is an apocalyptic number.

It is an amenable number.

87622541 is a deficient number, since it is larger than the sum of its proper divisors (65743).

87622541 is a wasteful number, since it uses less digits than its factorization.

87622541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65742.

The product of its digits is 26880, while the sum is 35.

The square root of 87622541 is about 9360.6912672088. The cubic root of 87622541 is about 444.1591511404.

The spelling of 87622541 in words is "eighty-seven million, six hundred twenty-two thousand, five hundred forty-one".