87401285 has 8 divisors (see below), whose sum is σ = 105340920. Its totient is φ = 69614784.

The previous prime is 87401269. The next prime is 87401297. The reversal of 87401285 is 58210478.

It can be written as a sum of positive squares in 4 ways, for example, as 15507844 + 71893441 = 3938^2 + 8479^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 87401285 - 2⁴ = 87401269 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 37022 + ... + 39311.

It is an arithmetic number, because the mean of its divisors is an integer number (13167615).

Almost surely, 2^87401285 is an apocalyptic number.

It is an amenable number.

87401285 is a deficient number, since it is larger than the sum of its proper divisors (17939635).

87401285 is a wasteful number, since it uses less digits than its factorization.

87401285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76567.

The product of its (nonzero) digits is 17920, while the sum is 35.

The square root of 87401285 is about 9348.8654391857. The cubic root of 87401285 is about 443.7849867277.

The spelling of 87401285 in words is "eighty-seven million, four hundred one thousand, two hundred eighty-five".