7254423666 has 80 divisors (see below), whose sum is σ = 18611341056. Its totient is φ = 2068913664.

The previous prime is 7254423641. The next prime is 7254423667. The reversal of 7254423666 is 6663244527.

It is not an unprimeable number, because it can be changed into a prime (7254423667) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 648775 + ... + 659861.

Almost surely, 2^7254423666 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7254423666, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9305670528).

7254423666 is an abundant number, since it is smaller than the sum of its proper divisors (11356917390).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7254423666 is a wasteful number, since it uses less digits than its factorization.

7254423666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11685 (or 11676 counting only the distinct ones).

The product of its digits is 1451520, while the sum is 45.

The square root of 7254423666 is about 85172.9045295509. The cubic root of 7254423666 is about 1935.8318831616.

The spelling of 7254423666 in words is "seven billion, two hundred fifty-four million, four hundred twenty-three thousand, six hundred sixty-six".