757438649 has 8 divisors (see below), whose sum is σ = 836757120. Its totient is φ = 679863600.

The previous prime is 757438639. The next prime is 757438651. The reversal of 757438649 is 946834757.

757438649 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 757438649 - 2¹² = 757434553 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 757438649.

It is not an unprimeable number, because it can be changed into a prime (757438639) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 434942 + ... + 436679.

It is an arithmetic number, because the mean of its divisors is an integer number (104594640).

Almost surely, 2^757438649 is an apocalyptic number.

757438649 is a gapful number since it is divisible by the number (79) formed by its first and last digit.

It is an amenable number.

757438649 is a deficient number, since it is larger than the sum of its proper divisors (79318471).

757438649 is a wasteful number, since it uses less digits than its factorization.

757438649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 871711.

The product of its digits is 5080320, while the sum is 53.

The square root of 757438649 is about 27521.6033144873. The cubic root of 757438649 is about 911.5541806514.

The spelling of 757438649 in words is "seven hundred fifty-seven million, four hundred thirty-eight thousand, six hundred forty-nine".