754640 has 20 divisors (see below), whose sum is σ = 1754724. Its totient is φ = 301824.

The previous prime is 754639. The next prime is 754651. The reversal of 754640 is 46457.

It can be written as a sum of positive squares in 2 ways, for example, as 399424 + 355216 = 632^2 + 596^2 .

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

It is a hoax number, since the sum of its digits (26) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4637 + ... + 4796.

2⁷⁵⁴⁶⁴⁰ is an apocalyptic number.

It is an amenable number.

754640 is an abundant number, since it is smaller than the sum of its proper divisors (1000084).

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

754640 is a wasteful number, since it uses less digits than its factorization.

754640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9446 (or 9440 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 26.

The square root of 754640 is about 868.7001784275. The cubic root of 754640 is about 91.0430098986.

The spelling of 754640 in words is "seven hundred fifty-four thousand, six hundred forty".