756740 has 24 divisors (see below), whose sum is σ = 1605912. Its totient is φ = 299520.

The previous prime is 756739. The next prime is 756773. The reversal of 756740 is 47657.

It can be written as a sum of positive squares in 4 ways, for example, as 87616 + 669124 = 296^2 + 818^2 .

It is a Smith number, since the sum of its digits (29) coincides with the sum of the digits of its prime factors.

It is a plaindrome in base 14.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3020 + ... + 3260.

It is an arithmetic number, because the mean of its divisors is an integer number (66913).

2⁷⁵⁶⁷⁴⁰ is an apocalyptic number.

It is an amenable number.

756740 is an abundant number, since it is smaller than the sum of its proper divisors (849172).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

756740 is a wasteful number, since it uses less digits than its factorization.

756740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 407 (or 405 counting only the distinct ones).

The product of its (nonzero) digits is 5880, while the sum is 29.

The square root of 756740 is about 869.9080411170. The cubic root of 756740 is about 91.1273826889.

The spelling of 756740 in words is "seven hundred fifty-six thousand, seven hundred forty".