897567427 has 4 divisors (see below), whose sum is σ = 908929120. Its totient is φ = 886205736.

The previous prime is 897567401. The next prime is 897567511. The reversal of 897567427 is 724765798.

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 897567427 - 2¹¹ = 897565379 is a prime.

It is a super-2 number, since 2×897567427² = 1611254572022800658, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (897567227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5680728 + ... + 5680885.

It is an arithmetic number, because the mean of its divisors is an integer number (227232280).

Almost surely, 2^897567427 is an apocalyptic number.

897567427 is a deficient number, since it is larger than the sum of its proper divisors (11361693).

897567427 is a wasteful number, since it uses less digits than its factorization.

897567427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11361692.

The product of its digits is 5927040, while the sum is 55.

The square root of 897567427 is about 29959.4296841579. The cubic root of 897567427 is about 964.6187392015.

The spelling of 897567427 in words is "eight hundred ninety-seven million, five hundred sixty-seven thousand, four hundred twenty-seven".