7331075640 has 128 divisors (see below), whose sum is σ = 27927936000. Its totient is φ = 1675672704.

The previous prime is 7331075639. The next prime is 7331075657. The reversal of 7331075640 is 465701337.

7331075640 is a `hidden beast` number, since 7 + 3 + 3 + 1 + 0 + 7 + 5 + 640 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 7331075595 and 7331075604.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 477300 + ... + 492419.

It is an arithmetic number, because the mean of its divisors is an integer number (218187000).

Almost surely, 2^7331075640 is an apocalyptic number.

7331075640 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

7331075640 is an abundant number, since it is smaller than the sum of its proper divisors (20596860360).

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

7331075640 is a wasteful number, since it uses less digits than its factorization.

7331075640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 969746 (or 969736 counting only the distinct ones).

The product of its (nonzero) digits is 52920, while the sum is 36.

The square root of 7331075640 is about 85621.7007539561. The cubic root of 7331075640 is about 1942.6261631508.

Adding to 7331075640 its reverse (465701337), we get a palindrome (7796776977).

The spelling of 7331075640 in words is "seven billion, three hundred thirty-one million, seventy-five thousand, six hundred forty".