654423145 has 8 divisors (see below), whose sum is σ = 785452104. Its totient is φ = 523442304.

The previous prime is 654423097. The next prime is 654423151. The reversal of 654423145 is 541324456.

It can be written as a sum of positive squares in 4 ways, for example, as 394697689 + 259725456 = 19867^2 + 16116^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 654423145 - 2¹⁹ = 653898857 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 654423145.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33717 + ... + 49453.

It is an arithmetic number, because the mean of its divisors is an integer number (98181513).

Almost surely, 2^654423145 is an apocalyptic number.

It is an amenable number.

654423145 is a deficient number, since it is larger than the sum of its proper divisors (131028959).

654423145 is a wasteful number, since it uses less digits than its factorization.

654423145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24059.

The product of its digits is 57600, while the sum is 34.

The square root of 654423145 is about 25581.6955067486. The cubic root of 654423145 is about 868.1995376278.

The spelling of 654423145 in words is "six hundred fifty-four million, four hundred twenty-three thousand, one hundred forty-five".