427664201 has 4 divisors (see below), whose sum is σ = 429057552. Its totient is φ = 426270852.

The previous prime is 427664183. The next prime is 427664203. The reversal of 427664201 is 102466724.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 427664201 - 2¹⁰ = 427663177 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (427664203) 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, 696215 + ... + 696828.

It is an arithmetic number, because the mean of its divisors is an integer number (107264388).

Almost surely, 2^427664201 is an apocalyptic number.

It is an amenable number.

427664201 is a deficient number, since it is larger than the sum of its proper divisors (1393351).

427664201 is a wasteful number, since it uses less digits than its factorization.

427664201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1393350.

The product of its (nonzero) digits is 16128, while the sum is 32.

The square root of 427664201 is about 20680.0435444416. The cubic root of 427664201 is about 753.4150638130.

The spelling of 427664201 in words is "four hundred twenty-seven million, six hundred sixty-four thousand, two hundred one".