756364649 has 4 divisors (see below), whose sum is σ = 756419664. Its totient is φ = 756309636.

The previous prime is 756364639. The next prime is 756364657. The reversal of 756364649 is 946463657.

756364649 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 946463657 = 5417 ⋅174721.

It is a cyclic number.

It is not a de Polignac number, because 756364649 - 2¹⁶ = 756299113 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 756364597 and 756364606.

It is not an unprimeable number, because it can be changed into a prime (756364639) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12974 + ... + 41000.

It is an arithmetic number, because the mean of its divisors is an integer number (189104916).

Almost surely, 2^756364649 is an apocalyptic number.

It is an amenable number.

756364649 is a deficient number, since it is larger than the sum of its proper divisors (55015).

756364649 is a wasteful number, since it uses less digits than its factorization.

756364649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55014.

The product of its digits is 3265920, while the sum is 50.

The square root of 756364649 is about 27502.0844482741. The cubic root of 756364649 is about 911.1231348365.

The spelling of 756364649 in words is "seven hundred fifty-six million, three hundred sixty-four thousand, six hundred forty-nine".