87009723 has 12 divisors (see below), whose sum is σ = 133073928. Its totient is φ = 54594240.

The previous prime is 87009709. The next prime is 87009733. The reversal of 87009723 is 32790078.

It is not a de Polignac number, because 87009723 - 2⁴ = 87009707 is a prime.

It is not an unprimeable number, because it can be changed into a prime (87009733) 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 in 11 ways as a sum of consecutive naturals, for example, 284193 + ... + 284498.

It is an arithmetic number, because the mean of its divisors is an integer number (11089494).

Almost surely, 2^87009723 is an apocalyptic number.

87009723 is a deficient number, since it is larger than the sum of its proper divisors (46064205).

87009723 is a wasteful number, since it uses less digits than its factorization.

87009723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 568714 (or 568711 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 36.

The square root of 87009723 is about 9327.9002460361. The cubic root of 87009723 is about 443.1212684802.

The spelling of 87009723 in words is "eighty-seven million, nine thousand, seven hundred twenty-three".