7722973 has 4 divisors (see below), whose sum is σ = 7931740. Its totient is φ = 7514208.

The previous prime is 7722943. The next prime is 7722983. The reversal of 7722973 is 3792277.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3792277 = 73 ⋅51949.

It can be written as a sum of positive squares in 2 ways, for example, as 6335289 + 1387684 = 2517^2 + 1178^2 .

It is a cyclic number.

It is not a de Polignac number, because 7722973 - 2⁵ = 7722941 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37), and also a Moran number because the ratio is a prime number: 208729 = 7722973 / (7 + 7 + 2 + 2 + 9 + 7 + 3).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7722943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 104328 + ... + 104401.

It is an arithmetic number, because the mean of its divisors is an integer number (1982935).

Almost surely, 2^7722973 is an apocalyptic number.

It is an amenable number.

7722973 is a deficient number, since it is larger than the sum of its proper divisors (208767).

7722973 is a wasteful number, since it uses less digits than its factorization.

7722973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208766.

The product of its digits is 37044, while the sum is 37.

The square root of 7722973 is about 2779.0237494487. The cubic root of 7722973 is about 197.6642696767.

The spelling of 7722973 in words is "seven million, seven hundred twenty-two thousand, nine hundred seventy-three".