723632669 has 2 divisors, whose sum is σ = 723632670. Its totient is φ = 723632668.

The previous prime is 723632641. The next prime is 723632671. The reversal of 723632669 is 966236327.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 511347769 + 212284900 = 22613^2 + 14570^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-723632669 is a prime.

It is a super-2 number, since 2×723632669² = 1047288479288127122, which contains 22 as substring.

Together with 723632671, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (723632269) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 361816334 + 361816335.

It is an arithmetic number, because the mean of its divisors is an integer number (361816335).

Almost surely, 2^723632669 is an apocalyptic number.

It is an amenable number.

723632669 is a deficient number, since it is larger than the sum of its proper divisors (1).

723632669 is an equidigital number, since it uses as much as digits as its factorization.

723632669 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 489888, while the sum is 44.

The square root of 723632669 is about 26900.4213535773. The cubic root of 723632669 is about 897.7857787495.

The spelling of 723632669 in words is "seven hundred twenty-three million, six hundred thirty-two thousand, six hundred sixty-nine".