755679440 has 20 divisors (see below), whose sum is σ = 1756954884. Its totient is φ = 302271744.

The previous prime is 755679437. The next prime is 755679473. The reversal of 755679440 is 44976557.

It can be written as a sum of positive squares in 2 ways, for example, as 216325264 + 539354176 = 14708^2 + 23224^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is an unprimeable number.

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, 4722917 + ... + 4723076.

Almost surely, 2^755679440 is an apocalyptic number.

It is an amenable number.

755679440 is an abundant number, since it is smaller than the sum of its proper divisors (1001275444).

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

755679440 is a wasteful number, since it uses less digits than its factorization.

755679440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9446006 (or 9446000 counting only the distinct ones).

The product of its (nonzero) digits is 1058400, while the sum is 47.

The square root of 755679440 is about 27489.6242244233. The cubic root of 755679440 is about 910.8479155607.

The spelling of 755679440 in words is "seven hundred fifty-five million, six hundred seventy-nine thousand, four hundred forty".