87751723 has 2 divisors, whose sum is σ = 87751724. Its totient is φ = 87751722.

The previous prime is 87751717. The next prime is 87751757. The reversal of 87751723 is 32715778.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 87751723 - 2²¹ = 85654571 is a prime.

It is not a weakly prime, because it can be changed into another prime (87701723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43875861 + 43875862.

It is an arithmetic number, because the mean of its divisors is an integer number (43875862).

Almost surely, 2^87751723 is an apocalyptic number.

87751723 is a deficient number, since it is larger than the sum of its proper divisors (1).

87751723 is an equidigital number, since it uses as much as digits as its factorization.

87751723 is an evil number, because the sum of its binary digits is even.

The product of its digits is 82320, while the sum is 40.

The square root of 87751723 is about 9367.5889640825. The cubic root of 87751723 is about 444.3773187211.

The spelling of 87751723 in words is "eighty-seven million, seven hundred fifty-one thousand, seven hundred twenty-three".