654138845 has 8 divisors (see below), whose sum is σ = 785355264. Its totient is φ = 523051984.

The previous prime is 654138787. The next prime is 654138847. The reversal of 654138845 is 548831456.

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 654138845 - 2²⁴ = 637361629 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 654138796 and 654138805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (654138847) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20909 + ... + 41778.

It is an arithmetic number, because the mean of its divisors is an integer number (98169408).

Almost surely, 2^654138845 is an apocalyptic number.

It is an amenable number.

654138845 is a deficient number, since it is larger than the sum of its proper divisors (131216419).

654138845 is a wasteful number, since it uses less digits than its factorization.

654138845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64779.

The product of its digits is 460800, while the sum is 44.

The square root of 654138845 is about 25576.1381955916. The cubic root of 654138845 is about 868.0737959054.

The spelling of 654138845 in words is "six hundred fifty-four million, one hundred thirty-eight thousand, eight hundred forty-five".