87431727 has 8 divisors (see below), whose sum is σ = 118486960. Its totient is φ = 57332160.

The previous prime is 87431719. The next prime is 87431737. The reversal of 87431727 is 72713478.

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

It is not a de Polignac number, because 87431727 - 2³ = 87431719 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 (87431737) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 238702 + ... + 239067.

It is an arithmetic number, because the mean of its divisors is an integer number (14810870).

Almost surely, 2^87431727 is an apocalyptic number.

87431727 is a deficient number, since it is larger than the sum of its proper divisors (31055233).

87431727 is a wasteful number, since it uses less digits than its factorization.

87431727 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 477833.

The product of its digits is 65856, while the sum is 39.

The square root of 87431727 is about 9350.4934094410. The cubic root of 87431727 is about 443.8365044080.

The spelling of 87431727 in words is "eighty-seven million, four hundred thirty-one thousand, seven hundred twenty-seven".