654749381 has 8 divisors (see below), whose sum is σ = 769216224. Its totient is φ = 549439920.

The previous prime is 654749369. The next prime is 654749399. The reversal of 654749381 is 183947456.

654749381 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 654749381 - 2¹⁴ = 654732997 is a prime.

It is a super-2 number, since 2×654749381² = 857393503839766322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (654749341) 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, 2289191 + ... + 2289476.

It is an arithmetic number, because the mean of its divisors is an integer number (96152028).

Almost surely, 2^654749381 is an apocalyptic number.

It is an amenable number.

654749381 is a deficient number, since it is larger than the sum of its proper divisors (114466843).

654749381 is a wasteful number, since it uses less digits than its factorization.

654749381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4578691.

The product of its digits is 725760, while the sum is 47.

The square root of 654749381 is about 25588.0710683709. The cubic root of 654749381 is about 868.3437821654.

The spelling of 654749381 in words is "six hundred fifty-four million, seven hundred forty-nine thousand, three hundred eighty-one".