87136467 has 16 divisors (see below), whose sum is σ = 127484928. Its totient is φ = 52501280.

The previous prime is 87136463. The next prime is 87136499. The reversal of 87136467 is 76463178.

It is a cyclic number.

It is not a de Polignac number, because 87136467 - 2² = 87136463 is a prime.

It is not an unprimeable number, because it can be changed into a prime (87136463) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 1923 + ... + 13340.

It is an arithmetic number, because the mean of its divisors is an integer number (7967808).

Almost surely, 2^87136467 is an apocalyptic number.

87136467 is a deficient number, since it is larger than the sum of its proper divisors (40348461).

87136467 is a wasteful number, since it uses less digits than its factorization.

87136467 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15450.

The product of its digits is 169344, while the sum is 42.

The square root of 87136467 is about 9334.6915856926. The cubic root of 87136467 is about 443.3363238095.

Subtracting from 87136467 its reverse (76463178), we obtain a square (10673289 = 3267²).

The spelling of 87136467 in words is "eighty-seven million, one hundred thirty-six thousand, four hundred sixty-seven".