87820127 has 6 divisors (see below), whose sum is σ = 88825968. Its totient is φ = 86825552.

The previous prime is 87820121. The next prime is 87820133. The reversal of 87820127 is 72102878.

It is an interprime number because it is at equal distance from previous prime (87820121) and next prime (87820133).

It is not a de Polignac number, because 87820127 - 2⁶ = 87820063 is a prime.

It is a super-2 number, since 2×87820127² = 15424749412592258, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87820121) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2378 + ... + 13464.

It is an arithmetic number, because the mean of its divisors is an integer number (14804328).

Almost surely, 2^87820127 is an apocalyptic number.

87820127 is a deficient number, since it is larger than the sum of its proper divisors (1005841).

87820127 is an equidigital number, since it uses as much as digits as its factorization.

87820127 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11265 (or 11176 counting only the distinct ones).

The product of its (nonzero) digits is 12544, while the sum is 35.

The square root of 87820127 is about 9371.2393524016. The cubic root of 87820127 is about 444.4927553572.

The spelling of 87820127 in words is "eighty-seven million, eight hundred twenty thousand, one hundred twenty-seven".