654746643 has 6 divisors (see below), whose sum is σ = 945745164. Its totient is φ = 436497756.

The previous prime is 654746641. The next prime is 654746657. The reversal of 654746643 is 346647456.

It is a happy number.

654746643 is a `hidden beast` number, since 6 + 547 + 4 + 66 + 43 = 666.

It is not a de Polignac number, because 654746643 - 2¹ = 654746641 is a prime.

It is not an unprimeable number, because it can be changed into a prime (654746641) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 36374805 + ... + 36374822.

It is an arithmetic number, because the mean of its divisors is an integer number (157624194).

Almost surely, 2^654746643 is an apocalyptic number.

654746643 is a deficient number, since it is larger than the sum of its proper divisors (290998521).

654746643 is a wasteful number, since it uses less digits than its factorization.

654746643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72749633 (or 72749630 counting only the distinct ones).

The product of its digits is 1451520, while the sum is 45.

The square root of 654746643 is about 25588.0175668222. The cubic root of 654746643 is about 868.3425717641.

The spelling of 654746643 in words is "six hundred fifty-four million, seven hundred forty-six thousand, six hundred forty-three".