754081640 has 32 divisors (see below), whose sum is σ = 1827199080. Its totient is φ = 278429952.

The previous prime is 754081621. The next prime is 754081651. The reversal of 754081640 is 46180457.

It can be written as a sum of positive squares in 4 ways, for example, as 568631716 + 185449924 = 23846^2 + 13618^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 754081640.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 724559 + ... + 725598.

Almost surely, 2^754081640 is an apocalyptic number.

It is an amenable number.

754081640 is an abundant number, since it is smaller than the sum of its proper divisors (1073117440).

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

754081640 is a wasteful number, since it uses less digits than its factorization.

754081640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1450181 (or 1450177 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 35.

The square root of 754081640 is about 27460.5469719742. The cubic root of 754081640 is about 910.2055004236.

The spelling of 754081640 in words is "seven hundred fifty-four million, eighty-one thousand, six hundred forty".