87388073 has 2 divisors, whose sum is σ = 87388074. Its totient is φ = 87388072.

The previous prime is 87388069. The next prime is 87388151. The reversal of 87388073 is 37088378.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 84419344 + 2968729 = 9188^2 + 1723^2 .

It is a cyclic number.

It is not a de Polignac number, because 87388073 - 2² = 87388069 is a prime.

It is not a weakly prime, because it can be changed into another prime (87388673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43694036 + 43694037.

It is an arithmetic number, because the mean of its divisors is an integer number (43694037).

Almost surely, 2^87388073 is an apocalyptic number.

It is an amenable number.

87388073 is a deficient number, since it is larger than the sum of its proper divisors (1).

87388073 is an equidigital number, since it uses as much as digits as its factorization.

87388073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 225792, while the sum is 44.

The square root of 87388073 is about 9348.1588026734. The cubic root of 87388073 is about 443.7626240408.

The spelling of 87388073 in words is "eighty-seven million, three hundred eighty-eight thousand, seventy-three".