87127491 has 8 divisors (see below), whose sum is σ = 126730944. Its totient is φ = 52804520.

The previous prime is 87127487. The next prime is 87127517. The reversal of 87127491 is 19472178.

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 87127491 - 2² = 87127487 is a prime.

It is not an unprimeable number, because it can be changed into a prime (87127451) 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, 1320081 + ... + 1320146.

It is an arithmetic number, because the mean of its divisors is an integer number (15841368).

Almost surely, 2^87127491 is an apocalyptic number.

87127491 is a deficient number, since it is larger than the sum of its proper divisors (39603453).

87127491 is a wasteful number, since it uses less digits than its factorization.

87127491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2640241.

The product of its digits is 28224, while the sum is 39.

The square root of 87127491 is about 9334.2107861351. The cubic root of 87127491 is about 443.3211004721.

The spelling of 87127491 in words is "eighty-seven million, one hundred twenty-seven thousand, four hundred ninety-one".