698078273 has 2 divisors, whose sum is σ = 698078274. Its totient is φ = 698078272.

The previous prime is 698078239. The next prime is 698078279. The reversal of 698078273 is 372870896.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 391723264 + 306355009 = 19792^2 + 17503^2 .

It is a cyclic number.

It is not a de Polignac number, because 698078273 - 2¹⁸ = 697816129 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (698078279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 349039136 + 349039137.

It is an arithmetic number, because the mean of its divisors is an integer number (349039137).

Almost surely, 2^698078273 is an apocalyptic number.

It is an amenable number.

698078273 is a deficient number, since it is larger than the sum of its proper divisors (1).

698078273 is an equidigital number, since it uses as much as digits as its factorization.

698078273 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1016064, while the sum is 50.

The square root of 698078273 is about 26421.1709240904. The cubic root of 698078273 is about 887.0907289156.

The spelling of 698078273 in words is "six hundred ninety-eight million, seventy-eight thousand, two hundred seventy-three".