7661224 has 16 divisors (see below), whose sum is σ = 14699520. Its totient is φ = 3741360.

The previous prime is 7661221. The next prime is 7661233. The reversal of 7661224 is 4221667.

It is a junction number, because it is equal to n+sod(n) for n = 7661192 and 7661201.

It is not an unprimeable number, because it can be changed into a prime (7661221) 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, 10792 + ... + 11479.

It is an arithmetic number, because the mean of its divisors is an integer number (918720).

Almost surely, 2^7661224 is an apocalyptic number.

It is an amenable number.

7661224 is a deficient number, since it is larger than the sum of its proper divisors (7038296).

7661224 is a wasteful number, since it uses less digits than its factorization.

7661224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22320 (or 22316 counting only the distinct ones).

The product of its digits is 4032, while the sum is 28.

The square root of 7661224 is about 2767.8916163752. The cubic root of 7661224 is about 197.1360514149.

It can be divided in two parts, 76612 and 24, that added together give a triangular number (76636 = T₃₉₁).

The spelling of 7661224 in words is "seven million, six hundred sixty-one thousand, two hundred twenty-four".