7722644 has 12 divisors (see below), whose sum is σ = 13540800. Its totient is φ = 3853848.

The previous prime is 7722643. The next prime is 7722647. The reversal of 7722644 is 4462277.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 7722644.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7722643) 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 3 ways as a sum of consecutive naturals, for example, 917 + ... + 4035.

It is an arithmetic number, because the mean of its divisors is an integer number (1128400).

Almost surely, 2^7722644 is an apocalyptic number.

It is an amenable number.

7722644 is a deficient number, since it is larger than the sum of its proper divisors (5818156).

7722644 is a wasteful number, since it uses less digits than its factorization.

7722644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3742 (or 3740 counting only the distinct ones).

The product of its digits is 18816, while the sum is 32.

The square root of 7722644 is about 2778.9645553695. The cubic root of 7722644 is about 197.6614627927.

The spelling of 7722644 in words is "seven million, seven hundred twenty-two thousand, six hundred forty-four".