754008649 has 4 divisors (see below), whose sum is σ = 755150020. Its totient is φ = 752867280.

The previous prime is 754008641. The next prime is 754008679. The reversal of 754008649 is 946800457.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 465178624 + 288830025 = 21568^2 + 16995^2 .

It is a cyclic number.

It is not a de Polignac number, because 754008649 - 2³ = 754008641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (754008641) 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 in 3 ways as a sum of consecutive naturals, for example, 569694 + ... + 571015.

It is an arithmetic number, because the mean of its divisors is an integer number (188787505).

Almost surely, 2^754008649 is an apocalyptic number.

It is an amenable number.

754008649 is a deficient number, since it is larger than the sum of its proper divisors (1141371).

754008649 is a wasteful number, since it uses less digits than its factorization.

754008649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1141370.

The product of its (nonzero) digits is 241920, while the sum is 43.

The square root of 754008649 is about 27459.2179240415. The cubic root of 754008649 is about 910.1761318292.

The spelling of 754008649 in words is "seven hundred fifty-four million, eight thousand, six hundred forty-nine".