738721679 has 2 divisors, whose sum is σ = 738721680. Its totient is φ = 738721678.

The previous prime is 738721649. The next prime is 738721693. The reversal of 738721679 is 976127837.

It is a strong prime.

It is an emirp because it is prime and its reverse (976127837) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 738721679 - 2¹⁶ = 738656143 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (738721649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 369360839 + 369360840.

It is an arithmetic number, because the mean of its divisors is an integer number (369360840).

Almost surely, 2^738721679 is an apocalyptic number.

738721679 is a deficient number, since it is larger than the sum of its proper divisors (1).

738721679 is an equidigital number, since it uses as much as digits as its factorization.

738721679 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 889056, while the sum is 50.

The square root of 738721679 is about 27179.4348543159. The cubic root of 738721679 is about 903.9830376219.

The spelling of 738721679 in words is "seven hundred thirty-eight million, seven hundred twenty-one thousand, six hundred seventy-nine".