7640733 has 4 divisors (see below), whose sum is σ = 10187648. Its totient is φ = 5093820.

The previous prime is 7640723. The next prime is 7640749. The reversal of 7640733 is 3370467.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 7640733 - 2⁹ = 7640221 is a prime.

It is a super-3 number, since 3×7640733³ (a number of 22 digits) contains 333 as substring.

It is a Duffinian number.

7640733 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 7640733.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7640723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1273453 + ... + 1273458.

It is an arithmetic number, because the mean of its divisors is an integer number (2546912).

Almost surely, 2^7640733 is an apocalyptic number.

It is an amenable number.

7640733 is a deficient number, since it is larger than the sum of its proper divisors (2546915).

7640733 is a wasteful number, since it uses less digits than its factorization.

7640733 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2546914.

The product of its (nonzero) digits is 10584, while the sum is 30.

The square root of 7640733 is about 2764.1875840833. The cubic root of 7640733 is about 196.9601386363.

The spelling of 7640733 in words is "seven million, six hundred forty thousand, seven hundred thirty-three".