427370561 has 4 divisors (see below), whose sum is σ = 427642800. Its totient is φ = 427098324.

The previous prime is 427370551. The next prime is 427370597. The reversal of 427370561 is 165073724.

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 a de Polignac number, because none of the positive numbers 2^k-427370561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (427370551) 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, 133751 + ... + 136908.

It is an arithmetic number, because the mean of its divisors is an integer number (106910700).

Almost surely, 2^427370561 is an apocalyptic number.

It is an amenable number.

427370561 is a deficient number, since it is larger than the sum of its proper divisors (272239).

427370561 is a wasteful number, since it uses less digits than its factorization.

427370561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272238.

The product of its (nonzero) digits is 35280, while the sum is 35.

The square root of 427370561 is about 20672.9427271494. The cubic root of 427370561 is about 753.2425893560.

The spelling of 427370561 in words is "four hundred twenty-seven million, three hundred seventy thousand, five hundred sixty-one".