87752641 has 4 divisors (see below), whose sum is σ = 90124372. Its totient is φ = 85380912.

The previous prime is 87752629. The next prime is 87752653. The reversal of 87752641 is 14625778.

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

It is an interprime number because it is at equal distance from previous prime (87752629) and next prime (87752653).

It can be written as a sum of positive squares in 2 ways, for example, as 65934400 + 21818241 = 8120^2 + 4671^2 .

It is a cyclic number.

It is not a de Polignac number, because 87752641 - 2⁹ = 87752129 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 87752594 and 87752603.

It is not an unprimeable number, because it can be changed into a prime (87752681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1185810 + ... + 1185883.

It is an arithmetic number, because the mean of its divisors is an integer number (22531093).

Almost surely, 2^87752641 is an apocalyptic number.

It is an amenable number.

87752641 is a deficient number, since it is larger than the sum of its proper divisors (2371731).

87752641 is a wasteful number, since it uses less digits than its factorization.

87752641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2371730.

The product of its digits is 94080, while the sum is 40.

The square root of 87752641 is about 9367.6379626884. The cubic root of 87752641 is about 444.3788683088.

The spelling of 87752641 in words is "eighty-seven million, seven hundred fifty-two thousand, six hundred forty-one".