427897507 has 4 divisors (see below), whose sum is σ = 427974040. Its totient is φ = 427820976.

The previous prime is 427897501. The next prime is 427897517. The reversal of 427897507 is 705798724.

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 427897507 - 2¹⁵ = 427864739 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (427897501) 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, 29157 + ... + 41302.

It is an arithmetic number, because the mean of its divisors is an integer number (106993510).

Almost surely, 2^427897507 is an apocalyptic number.

427897507 is a deficient number, since it is larger than the sum of its proper divisors (76533).

427897507 is an equidigital number, since it uses as much as digits as its factorization.

427897507 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76532.

The product of its (nonzero) digits is 987840, while the sum is 49.

The square root of 427897507 is about 20685.6836241880. The cubic root of 427897507 is about 753.5520437925.

The spelling of 427897507 in words is "four hundred twenty-seven million, eight hundred ninety-seven thousand, five hundred seven".