87604081 has 2 divisors, whose sum is σ = 87604082. Its totient is φ = 87604080.

The previous prime is 87604057. The next prime is 87604087. The reversal of 87604081 is 18040678.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 82519056 + 5085025 = 9084^2 + 2255^2 .

It is a cyclic number.

It is not a de Polignac number, because 87604081 - 2¹¹ = 87602033 is a prime.

It is a super-2 number, since 2×87604081² = 15348950015709122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (87604087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43802040 + 43802041.

It is an arithmetic number, because the mean of its divisors is an integer number (43802041).

Almost surely, 2^87604081 is an apocalyptic number.

It is an amenable number.

87604081 is a deficient number, since it is larger than the sum of its proper divisors (1).

87604081 is an equidigital number, since it uses as much as digits as its factorization.

87604081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10752, while the sum is 34.

The square root of 87604081 is about 9359.7051769807. The cubic root of 87604081 is about 444.1279576686.

The spelling of 87604081 in words is "eighty-seven million, six hundred four thousand, eighty-one".