87120067 has 8 divisors (see below), whose sum is σ = 91024416. Its totient is φ = 83225472.

The previous prime is 87120029. The next prime is 87120091. The reversal of 87120067 is 76002178.

It is a happy number.

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 87120067 - 2⁷ = 87119939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87120667) 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, 20533 + ... + 24409.

It is an arithmetic number, because the mean of its divisors is an integer number (11378052).

Almost surely, 2^87120067 is an apocalyptic number.

87120067 is a deficient number, since it is larger than the sum of its proper divisors (3904349).

87120067 is a wasteful number, since it uses less digits than its factorization.

87120067 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4877.

The product of its (nonzero) digits is 4704, while the sum is 31.

The square root of 87120067 is about 9333.8131007643. The cubic root of 87120067 is about 443.3085085439.

The spelling of 87120067 in words is "eighty-seven million, one hundred twenty thousand, sixty-seven".