7640223 has 8 divisors (see below), whose sum is σ = 10723200. Its totient is φ = 4825368.

The previous prime is 7640221. The next prime is 7640249. The reversal of 7640223 is 3220467.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 7640223 - 2¹ = 7640221 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 7640193 and 7640202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7640221) 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 7 ways as a sum of consecutive naturals, for example, 66963 + ... + 67076.

It is an arithmetic number, because the mean of its divisors is an integer number (1340400).

Almost surely, 2^7640223 is an apocalyptic number.

7640223 is a deficient number, since it is larger than the sum of its proper divisors (3082977).

7640223 is a wasteful number, since it uses less digits than its factorization.

7640223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134061.

The product of its (nonzero) digits is 2016, while the sum is 24.

The square root of 7640223 is about 2764.0953312069. The cubic root of 7640223 is about 196.9557563383.

The spelling of 7640223 in words is "seven million, six hundred forty thousand, two hundred twenty-three".