698423723 has 2 divisors, whose sum is σ = 698423724. Its totient is φ = 698423722.

The previous prime is 698423711. The next prime is 698423741. The reversal of 698423723 is 327324896.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 698423723 - 2⁶ = 698423659 is a prime.

It is not a weakly prime, because it can be changed into another prime (698423783) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 349211861 + 349211862.

It is an arithmetic number, because the mean of its divisors is an integer number (349211862).

Almost surely, 2^698423723 is an apocalyptic number.

698423723 is a deficient number, since it is larger than the sum of its proper divisors (1).

698423723 is an equidigital number, since it uses as much as digits as its factorization.

698423723 is an evil number, because the sum of its binary digits is even.

The product of its digits is 435456, while the sum is 44.

The square root of 698423723 is about 26427.7074866512. The cubic root of 698423723 is about 887.2370329281.

The spelling of 698423723 in words is "six hundred ninety-eight million, four hundred twenty-three thousand, seven hundred twenty-three".