427564069 has 8 divisors (see below), whose sum is σ = 433802880. Its totient is φ = 421362816.

The previous prime is 427564063. The next prime is 427564073. The reversal of 427564069 is 960465724.

It is a happy number.

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 427564069 - 2³ = 427564061 is a prime.

It is a super-2 number, since 2×427564069² = 365622066199673522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (427564061) 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, 13962 + ... + 32404.

It is an arithmetic number, because the mean of its divisors is an integer number (54225360).

Almost surely, 2^427564069 is an apocalyptic number.

It is an amenable number.

427564069 is a deficient number, since it is larger than the sum of its proper divisors (6238811).

427564069 is a wasteful number, since it uses less digits than its factorization.

427564069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18779.

The product of its (nonzero) digits is 362880, while the sum is 43.

The square root of 427564069 is about 20677.6224213520. The cubic root of 427564069 is about 753.3562584499.

The spelling of 427564069 in words is "four hundred twenty-seven million, five hundred sixty-four thousand, sixty-nine".