679201553 has 2 divisors, whose sum is σ = 679201554. Its totient is φ = 679201552.

The previous prime is 679201541. The next prime is 679201571. The reversal of 679201553 is 355102976.

It is a happy number.

679201553 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 496086529 + 183115024 = 22273^2 + 13532^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-679201553 is a prime.

It is a super-2 number, since 2×679201553² = 922629499195223618, which contains 22 as substring.

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 (679201513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 339600776 + 339600777.

It is an arithmetic number, because the mean of its divisors is an integer number (339600777).

Almost surely, 2^679201553 is an apocalyptic number.

It is an amenable number.

679201553 is a deficient number, since it is larger than the sum of its proper divisors (1).

679201553 is an equidigital number, since it uses as much as digits as its factorization.

679201553 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 56700, while the sum is 38.

The square root of 679201553 is about 26061.4956017493. The cubic root of 679201553 is about 879.0216196860.

The spelling of 679201553 in words is "six hundred seventy-nine million, two hundred one thousand, five hundred fifty-three".