423726673 has 4 divisors (see below), whose sum is σ = 423963748. Its totient is φ = 423489600.

The previous prime is 423726659. The next prime is 423726689. The reversal of 423726673 is 376627324.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 212663889 + 211062784 = 14583^2 + 14528^2 .

It is a cyclic number.

It is not a de Polignac number, because 423726673 - 2¹³ = 423718481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (423726643) 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, 115836 + ... + 119437.

It is an arithmetic number, because the mean of its divisors is an integer number (105990937).

Almost surely, 2^423726673 is an apocalyptic number.

It is an amenable number.

423726673 is a deficient number, since it is larger than the sum of its proper divisors (237075).

423726673 is a wasteful number, since it uses less digits than its factorization.

423726673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237074.

The product of its digits is 254016, while the sum is 40.

The square root of 423726673 is about 20584.6222457445. The cubic root of 423726673 is about 751.0956862198.

The spelling of 423726673 in words is "four hundred twenty-three million, seven hundred twenty-six thousand, six hundred seventy-three".