7722445 has 4 divisors (see below), whose sum is σ = 9266940. Its totient is φ = 6177952.

The previous prime is 7722443. The next prime is 7722467. The reversal of 7722445 is 5442277.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5745609 + 1976836 = 2397^2 + 1406^2 .

It is a cyclic number.

It is not a de Polignac number, because 7722445 - 2¹ = 7722443 is a prime.

It is a d-powerful number, because it can be written as 7 + 7⁸ + 2⁵ + 2⁷ + 4⁴ + 4⁶ + 5⁹ .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7722443) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 772240 + ... + 772249.

It is an arithmetic number, because the mean of its divisors is an integer number (2316735).

Almost surely, 2^7722445 is an apocalyptic number.

It is an amenable number.

7722445 is a deficient number, since it is larger than the sum of its proper divisors (1544495).

7722445 is a wasteful number, since it uses less digits than its factorization.

7722445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1544494.

The product of its digits is 15680, while the sum is 31.

The square root of 7722445 is about 2778.9287504360. The cubic root of 7722445 is about 197.6597649731.

It can be divided in two parts, 77 and 22445, that added together give a palindrome (22522).

The spelling of 7722445 in words is "seven million, seven hundred twenty-two thousand, four hundred forty-five".