87402871 has 2 divisors, whose sum is σ = 87402872. Its totient is φ = 87402870.

The previous prime is 87402851. The next prime is 87402881. The reversal of 87402871 is 17820478.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 87402871 - 2¹³ = 87394679 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 87402871.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87402841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43701435 + 43701436.

It is an arithmetic number, because the mean of its divisors is an integer number (43701436).

Almost surely, 2^87402871 is an apocalyptic number.

87402871 is a deficient number, since it is larger than the sum of its proper divisors (1).

87402871 is an equidigital number, since it uses as much as digits as its factorization.

87402871 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25088, while the sum is 37.

The square root of 87402871 is about 9348.9502619278. The cubic root of 87402871 is about 443.7876710464.

It can be divided in two parts, 8740 and 2871, that added together give a palindrome (11611).

The spelling of 87402871 in words is "eighty-seven million, four hundred two thousand, eight hundred seventy-one".