663456467 has 4 divisors (see below), whose sum is σ = 702483336. Its totient is φ = 624429600.

The previous prime is 663456439. The next prime is 663456481. The reversal of 663456467 is 764654366.

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

It is a cyclic number.

It is not a de Polignac number, because 663456467 - 2²⁶ = 596347603 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (663456407) 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, 19513409 + ... + 19513442.

It is an arithmetic number, because the mean of its divisors is an integer number (175620834).

Almost surely, 2^663456467 is an apocalyptic number.

663456467 is a deficient number, since it is larger than the sum of its proper divisors (39026869).

663456467 is a wasteful number, since it uses less digits than its factorization.

663456467 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39026868.

The product of its digits is 2177280, while the sum is 47.

The square root of 663456467 is about 25757.6487086846. The cubic root of 663456467 is about 872.1760241926.

The spelling of 663456467 in words is "six hundred sixty-three million, four hundred fifty-six thousand, four hundred sixty-seven".