654797641 has 4 divisors (see below), whose sum is σ = 677376900. Its totient is φ = 632218384.

The previous prime is 654797623. The next prime is 654797657. The reversal of 654797641 is 146797456.

654797641 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.

It can be written as a sum of positive squares in 2 ways, for example, as 367834041 + 286963600 = 19179^2 + 16940^2 .

It is a cyclic number.

It is not a de Polignac number, because 654797641 - 2¹⁷ = 654666569 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (654747641) 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, 11289586 + ... + 11289643.

It is an arithmetic number, because the mean of its divisors is an integer number (169344225).

Almost surely, 2^654797641 is an apocalyptic number.

It is an amenable number.

654797641 is a deficient number, since it is larger than the sum of its proper divisors (22579259).

654797641 is a wasteful number, since it uses less digits than its factorization.

654797641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22579258.

The product of its digits is 1270080, while the sum is 49.

The square root of 654797641 is about 25589.0140685412. The cubic root of 654797641 is about 868.3651161509.

The spelling of 654797641 in words is "six hundred fifty-four million, seven hundred ninety-seven thousand, six hundred forty-one".