679197469 has 2 divisors, whose sum is σ = 679197470. Its totient is φ = 679197468.

The previous prime is 679197451. The next prime is 679197473. The reversal of 679197469 is 964791976.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 640596100 + 38601369 = 25310^2 + 6213^2 .

It is a cyclic number.

It is not a de Polignac number, because 679197469 - 2⁹ = 679196957 is a prime.

It is a super-2 number, since 2×679197469² = 922618403792011922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (679197269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 339598734 + 339598735.

It is an arithmetic number, because the mean of its divisors is an integer number (339598735).

Almost surely, 2^679197469 is an apocalyptic number.

It is an amenable number.

679197469 is a deficient number, since it is larger than the sum of its proper divisors (1).

679197469 is an equidigital number, since it uses as much as digits as its factorization.

679197469 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5143824, while the sum is 58.

The square root of 679197469 is about 26061.4172484921. The cubic root of 679197469 is about 879.0198578469.

The spelling of 679197469 in words is "six hundred seventy-nine million, one hundred ninety-seven thousand, four hundred sixty-nine".