750640 has 40 divisors (see below), whose sum is σ = 1906128. Its totient is φ = 272640.

The previous prime is 750613. The next prime is 750641. The reversal of 750640 is 46057.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (750641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 454 + ... + 1306.

2⁷⁵⁰⁶⁴⁰ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 750640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (953064).

750640 is an abundant number, since it is smaller than the sum of its proper divisors (1155488).

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

750640 is a wasteful number, since it uses less digits than its factorization.

750640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 877 (or 871 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 22.

The square root of 750640 is about 866.3948291628. The cubic root of 750640 is about 90.8818657869.

Adding to 750640 its reverse (46057), we get a palindrome (796697).

The spelling of 750640 in words is "seven hundred fifty thousand, six hundred forty".