87223723 has 2 divisors, whose sum is σ = 87223724. Its totient is φ = 87223722.

The previous prime is 87223711. The next prime is 87223729. The reversal of 87223723 is 32732278.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 87223723 - 2⁵ = 87223691 is a prime.

It is not a weakly prime, because it can be changed into another prime (87223729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43611861 + 43611862.

It is an arithmetic number, because the mean of its divisors is an integer number (43611862).

Almost surely, 2^87223723 is an apocalyptic number.

87223723 is a deficient number, since it is larger than the sum of its proper divisors (1).

87223723 is an equidigital number, since it uses as much as digits as its factorization.

87223723 is an evil number, because the sum of its binary digits is even.

The product of its digits is 28224, while the sum is 34.

The square root of 87223723 is about 9339.3641646528. The cubic root of 87223723 is about 443.4842559382.

The spelling of 87223723 in words is "eighty-seven million, two hundred twenty-three thousand, seven hundred twenty-three".