7856465 has 12 divisors (see below), whose sum is σ = 10016796. Its totient is φ = 5914368.

The previous prime is 7856447. The next prime is 7856467. The reversal of 7856465 is 5646587.

It can be written as a sum of positive squares in 6 ways, for example, as 506944 + 7349521 = 712^2 + 2711^2 .

It is not a de Polignac number, because 7856465 - 2¹⁴ = 7840081 is a prime.

It is a super-3 number, since 3×7856465³ (a number of 22 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7856467) 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 11 ways as a sum of consecutive naturals, for example, 1274 + ... + 4163.

It is an arithmetic number, because the mean of its divisors is an integer number (834733).

Almost surely, 2^7856465 is an apocalyptic number.

It is an amenable number.

7856465 is a deficient number, since it is larger than the sum of its proper divisors (2160331).

7856465 is a wasteful number, since it uses less digits than its factorization.

7856465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5476 (or 5459 counting only the distinct ones).

The product of its digits is 201600, while the sum is 41.

The square root of 7856465 is about 2802.9386365028. The cubic root of 7856465 is about 198.7966492559.

The spelling of 7856465 in words is "seven million, eight hundred fifty-six thousand, four hundred sixty-five".