73887487 has 2 divisors, whose sum is σ = 73887488. Its totient is φ = 73887486.

The previous prime is 73887481. The next prime is 73887511. The reversal of 73887487 is 78478837.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-73887487 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (73887481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36943743 + 36943744.

It is an arithmetic number, because the mean of its divisors is an integer number (36943744).

Almost surely, 2^73887487 is an apocalyptic number.

73887487 is a deficient number, since it is larger than the sum of its proper divisors (1).

73887487 is an equidigital number, since it uses as much as digits as its factorization.

73887487 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2107392, while the sum is 52.

The square root of 73887487 is about 8595.7830940526. The cubic root of 73887487 is about 419.6207593291.

The spelling of 73887487 in words is "seventy-three million, eight hundred eighty-seven thousand, four hundred eighty-seven".