679219573 has 2 divisors, whose sum is σ = 679219574. Its totient is φ = 679219572.

The previous prime is 679219553. The next prime is 679219621. The reversal of 679219573 is 375912976.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 662393169 + 16826404 = 25737^2 + 4102^2 .

It is a cyclic number.

It is not a de Polignac number, because 679219573 - 2¹³ = 679211381 is a prime.

It is a super-4 number, since 4×679219573⁴ (a number of 36 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (679219553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 339609786 + 339609787.

It is an arithmetic number, because the mean of its divisors is an integer number (339609787).

Almost surely, 2^679219573 is an apocalyptic number.

It is an amenable number.

679219573 is a deficient number, since it is larger than the sum of its proper divisors (1).

679219573 is an equidigital number, since it uses as much as digits as its factorization.

679219573 is an evil number, because the sum of its binary digits is even.

The product of its digits is 714420, while the sum is 49.

The square root of 679219573 is about 26061.8413202137. The cubic root of 679219573 is about 879.0293934361.

The spelling of 679219573 in words is "six hundred seventy-nine million, two hundred nineteen thousand, five hundred seventy-three".