87378471 has 6 divisors (see below), whose sum is σ = 126213360. Its totient is φ = 58252308.

The previous prime is 87378439. The next prime is 87378481. The reversal of 87378471 is 17487378.

It is a happy number.

It is not a de Polignac number, because 87378471 - 2⁵ = 87378439 is a prime.

It is a super-3 number, since 3×87378471³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87378481) 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 5 ways as a sum of consecutive naturals, for example, 4854351 + ... + 4854368.

It is an arithmetic number, because the mean of its divisors is an integer number (21035560).

Almost surely, 2^87378471 is an apocalyptic number.

87378471 is a deficient number, since it is larger than the sum of its proper divisors (38834889).

87378471 is a wasteful number, since it uses less digits than its factorization.

87378471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9708725 (or 9708722 counting only the distinct ones).

The product of its digits is 263424, while the sum is 45.

The square root of 87378471 is about 9347.6452114958. The cubic root of 87378471 is about 443.7463702408.

The spelling of 87378471 in words is "eighty-seven million, three hundred seventy-eight thousand, four hundred seventy-one".