87380071 has 4 divisors (see below), whose sum is σ = 87468712. Its totient is φ = 87291432.

The previous prime is 87380053. The next prime is 87380087. The reversal of 87380071 is 17008378.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17008378 = 2 ⋅8504189.

It is a cyclic number.

It is not a de Polignac number, because 87380071 - 2⁵ = 87380039 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 (87380011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42825 + ... + 44818.

It is an arithmetic number, because the mean of its divisors is an integer number (21867178).

Almost surely, 2^87380071 is an apocalyptic number.

87380071 is a deficient number, since it is larger than the sum of its proper divisors (88641).

87380071 is an equidigital number, since it uses as much as digits as its factorization.

87380071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88640.

The product of its (nonzero) digits is 9408, while the sum is 34.

The square root of 87380071 is about 9347.7307941553. The cubic root of 87380071 is about 443.7490787259.

The spelling of 87380071 in words is "eighty-seven million, three hundred eighty thousand, seventy-one".