87604091 has 2 divisors, whose sum is σ = 87604092. Its totient is φ = 87604090.

The previous prime is 87604087. The next prime is 87604147. The reversal of 87604091 is 19040678.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 87604091 - 2² = 87604087 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is equal to p_5086178 and since 87604091 and 5086178 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (87604021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43802045 + 43802046.

It is an arithmetic number, because the mean of its divisors is an integer number (43802046).

Almost surely, 2^87604091 is an apocalyptic number.

87604091 is a deficient number, since it is larger than the sum of its proper divisors (1).

87604091 is an equidigital number, since it uses as much as digits as its factorization.

87604091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12096, while the sum is 35.

The square root of 87604091 is about 9359.7057111856. The cubic root of 87604091 is about 444.1279745676.

The spelling of 87604091 in words is "eighty-seven million, six hundred four thousand, ninety-one".