7957645 has 8 divisors (see below), whose sum is σ = 9619704. Its totient is φ = 6319104.

The previous prime is 7957619. The next prime is 7957667. The reversal of 7957645 is 5467597.

It can be written as a sum of positive squares in 4 ways, for example, as 635209 + 7322436 = 797^2 + 2706^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 7957645 - 2⁵ = 7957613 is a prime.

It is a super-3 number, since 3×7957645³ (a number of 22 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 5124 + ... + 6493.

It is an arithmetic number, because the mean of its divisors is an integer number (1202463).

Almost surely, 2^7957645 is an apocalyptic number.

It is an amenable number.

7957645 is a deficient number, since it is larger than the sum of its proper divisors (1662059).

7957645 is a wasteful number, since it uses less digits than its factorization.

7957645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11759.

The product of its digits is 264600, while the sum is 43.

The square root of 7957645 is about 2820.9298112502. The cubic root of 7957645 is about 199.6464169301.

The spelling of 7957645 in words is "seven million, nine hundred fifty-seven thousand, six hundred forty-five".