423816647 has 8 divisors (see below), whose sum is σ = 456354000. Its totient is φ = 392124544.

The previous prime is 423816623. The next prime is 423816649. The reversal of 423816647 is 746618324.

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

It is a cyclic number.

It is not a de Polignac number, because 423816647 - 2²⁶ = 356707783 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423816649) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 210272 + ... + 212277.

It is an arithmetic number, because the mean of its divisors is an integer number (57044250).

Almost surely, 2^423816647 is an apocalyptic number.

423816647 is a deficient number, since it is larger than the sum of its proper divisors (32537353).

423816647 is a wasteful number, since it uses less digits than its factorization.

423816647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 422625.

The product of its digits is 193536, while the sum is 41.

The square root of 423816647 is about 20586.8075961282. The cubic root of 423816647 is about 751.1488449382.

The spelling of 423816647 in words is "four hundred twenty-three million, eight hundred sixteen thousand, six hundred forty-seven".