7722865 has 4 divisors (see below), whose sum is σ = 9267444. Its totient is φ = 6178288.

The previous prime is 7722857. The next prime is 7722877. The reversal of 7722865 is 5682277.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5682277 = 331 ⋅17167.

It can be written as a sum of positive squares in 2 ways, for example, as 1567504 + 6155361 = 1252^2 + 2481^2 .

It is a cyclic number.

It is not a de Polignac number, because 7722865 - 2³ = 7722857 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 772282 + ... + 772291.

It is an arithmetic number, because the mean of its divisors is an integer number (2316861).

Almost surely, 2^7722865 is an apocalyptic number.

It is an amenable number.

7722865 is a deficient number, since it is larger than the sum of its proper divisors (1544579).

7722865 is a wasteful number, since it uses less digits than its factorization.

7722865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1544578.

The product of its digits is 47040, while the sum is 37.

The square root of 7722865 is about 2779.0043180967. The cubic root of 7722865 is about 197.6633482768.

The spelling of 7722865 in words is "seven million, seven hundred twenty-two thousand, eight hundred sixty-five".