654815461 has 4 divisors (see below), whose sum is σ = 655507872. Its totient is φ = 654123052.

The previous prime is 654815431. The next prime is 654815471. The reversal of 654815461 is 164518456.

654815461 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 not a de Polignac number, because 654815461 - 2⁹ = 654814949 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (654815431) 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, 344785 + ... + 346678.

It is an arithmetic number, because the mean of its divisors is an integer number (163876968).

Almost surely, 2^654815461 is an apocalyptic number.

It is an amenable number.

654815461 is a deficient number, since it is larger than the sum of its proper divisors (692411).

654815461 is an equidigital number, since it uses as much as digits as its factorization.

654815461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 692410.

The product of its digits is 115200, while the sum is 40.

The square root of 654815461 is about 25589.3622624715. The cubic root of 654815461 is about 868.3729934578.

The spelling of 654815461 in words is "six hundred fifty-four million, eight hundred fifteen thousand, four hundred sixty-one".