756949 has 4 divisors (see below), whose sum is σ = 769420. Its totient is φ = 744480.

The previous prime is 756923. The next prime is 756961. The reversal of 756949 is 949657.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 949657 = 73 ⋅13009.

It can be written as a sum of positive squares in 2 ways, for example, as 22500 + 734449 = 150^2 + 857^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-756949 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (756919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6144 + ... + 6265.

It is an arithmetic number, because the mean of its divisors is an integer number (192355).

2⁷⁵⁶⁹⁴⁹ is an apocalyptic number.

It is an amenable number.

756949 is a deficient number, since it is larger than the sum of its proper divisors (12471).

756949 is a wasteful number, since it uses less digits than its factorization.

756949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12470.

The product of its digits is 68040, while the sum is 40.

The square root of 756949 is about 870.0281604638. The cubic root of 756949 is about 91.1357712459.

It can be divided in two parts, 7569 and 49, that multiplied together give a square (370881 = 609²).

The spelling of 756949 in words is "seven hundred fifty-six thousand, nine hundred forty-nine".