7641865 has 32 divisors (see below), whose sum is σ = 11943936. Its totient is φ = 4551360.

The previous prime is 7641863. The next prime is 7641883. The reversal of 7641865 is 5681467.

It is not a de Polignac number, because 7641865 - 2¹ = 7641863 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7641863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8424 + ... + 9286.

It is an arithmetic number, because the mean of its divisors is an integer number (373248).

Almost surely, 2^7641865 is an apocalyptic number.

It is an amenable number.

7641865 is a deficient number, since it is larger than the sum of its proper divisors (4302071).

7641865 is a wasteful number, since it uses less digits than its factorization.

7641865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 909.

The product of its digits is 40320, while the sum is 37.

The square root of 7641865 is about 2764.3923382906. The cubic root of 7641865 is about 196.9698649225.

The spelling of 7641865 in words is "seven million, six hundred forty-one thousand, eight hundred sixty-five".