754974721 has 2 divisors, whose sum is σ = 754974722. Its totient is φ = 754974720.

The previous prime is 754974691. The next prime is 754974733. The reversal of 754974721 is 127479457.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 748624321 + 6350400 = 27361^2 + 2520^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-754974721 is a prime.

It is not a weakly prime, because it can be changed into another prime (754974791) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 377487360 + 377487361.

It is an arithmetic number, because the mean of its divisors is an integer number (377487361).

It is a Proth number, since it is equal to 45 ⋅ 2²⁴ + 1 and 45 < 2²⁴.

Almost surely, 2^754974721 is an apocalyptic number.

It is an amenable number.

754974721 is a deficient number, since it is larger than the sum of its proper divisors (1).

754974721 is an equidigital number, since it uses as much as digits as its factorization.

754974721 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 493920, while the sum is 46.

The square root of 754974721 is about 27476.8033257146. The cubic root of 754974721 is about 910.5646863515.

The spelling of 754974721 in words is "seven hundred fifty-four million, nine hundred seventy-four thousand, seven hundred twenty-one".