673754649749 has 2 divisors, whose sum is σ = 673754649750. Its totient is φ = 673754649748.

The previous prime is 673754649731. The next prime is 673754649793. The reversal of 673754649749 is 947946457376.

673754649749 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., 593131022500 + 80623627249 = 770150^2 + 283943^2 .

It is a cyclic number.

It is not a de Polignac number, because 673754649749 - 2¹² = 673754645653 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (673754646749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 336877324874 + 336877324875.

It is an arithmetic number, because the mean of its divisors is an integer number (336877324875).

Almost surely, 2^673754649749 is an apocalyptic number.

It is an amenable number.

673754649749 is a deficient number, since it is larger than the sum of its proper divisors (1).

673754649749 is an equidigital number, since it uses as much as digits as its factorization.

673754649749 is an evil number, because the sum of its binary digits is even.

The product of its digits is 960180480, while the sum is 71.

The spelling of 673754649749 in words is "six hundred seventy-three billion, seven hundred fifty-four million, six hundred forty-nine thousand, seven hundred forty-nine".