80987723 has 2 divisors, whose sum is σ = 80987724. Its totient is φ = 80987722.

The previous prime is 80987713. The next prime is 80987729. The reversal of 80987723 is 32778908.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 80987723 - 2⁶ = 80987659 is a prime.

It is a super-2 number, since 2×80987723² = 13118022553449458, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (80987729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40493861 + 40493862.

It is an arithmetic number, because the mean of its divisors is an integer number (40493862).

Almost surely, 2^80987723 is an apocalyptic number.

80987723 is a deficient number, since it is larger than the sum of its proper divisors (1).

80987723 is an equidigital number, since it uses as much as digits as its factorization.

80987723 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 169344, while the sum is 44.

The square root of 80987723 is about 8999.3179185981. The cubic root of 80987723 is about 432.6530101137.

The spelling of 80987723 in words is "eighty million, nine hundred eighty-seven thousand, seven hundred twenty-three".