697672819 has 2 divisors, whose sum is σ = 697672820. Its totient is φ = 697672818.

The previous prime is 697672771. The next prime is 697672847. The reversal of 697672819 is 918276796.

697672819 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 697672819 - 2²⁵ = 664118387 is a prime.

It is a super-3 number, since 3×697672819³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 697672819.

It is not a weakly prime, because it can be changed into another prime (697672879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 348836409 + 348836410.

It is an arithmetic number, because the mean of its divisors is an integer number (348836410).

Almost surely, 2^697672819 is an apocalyptic number.

697672819 is a deficient number, since it is larger than the sum of its proper divisors (1).

697672819 is an equidigital number, since it uses as much as digits as its factorization.

697672819 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2286144, while the sum is 55.

The square root of 697672819 is about 26413.4969097240. The cubic root of 697672819 is about 886.9189505943.

The spelling of 697672819 in words is "six hundred ninety-seven million, six hundred seventy-two thousand, eight hundred nineteen".