654343457 has 4 divisors (see below), whose sum is σ = 663307140. Its totient is φ = 645379776.

The previous prime is 654343441. The next prime is 654343471. The reversal of 654343457 is 754343456.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 343138576 + 311204881 = 18524^2 + 17641^2 .

It is a cyclic number.

It is not a de Polignac number, because 654343457 - 2⁴ = 654343441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (654343057) 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, 4481732 + ... + 4481877.

It is an arithmetic number, because the mean of its divisors is an integer number (165826785).

Almost surely, 2^654343457 is an apocalyptic number.

It is an amenable number.

654343457 is a deficient number, since it is larger than the sum of its proper divisors (8963683).

654343457 is an equidigital number, since it uses as much as digits as its factorization.

654343457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8963682.

The product of its digits is 604800, while the sum is 41.

The square root of 654343457 is about 25580.1379394248. The cubic root of 654343457 is about 868.1642964674.

Subtracting 654343457 from its reverse (754343456), we obtain a palindrome (99999999).

The spelling of 654343457 in words is "six hundred fifty-four million, three hundred forty-three thousand, four hundred fifty-seven".