654874381 has 4 divisors (see below), whose sum is σ = 748427872. Its totient is φ = 561320892.

The previous prime is 654874333. The next prime is 654874397. The reversal of 654874381 is 183478456.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 654874381 - 2¹¹ = 654872333 is a prime.

It is a super-2 number, since 2×654874381² = 857720909780266322, 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 (654874681) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 46776735 + ... + 46776748.

It is an arithmetic number, because the mean of its divisors is an integer number (187106968).

Almost surely, 2^654874381 is an apocalyptic number.

It is an amenable number.

654874381 is a deficient number, since it is larger than the sum of its proper divisors (93553491).

654874381 is an equidigital number, since it uses as much as digits as its factorization.

654874381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93553490.

The product of its digits is 645120, while the sum is 46.

The square root of 654874381 is about 25590.5134962157. The cubic root of 654874381 is about 868.3990379468.

The spelling of 654874381 in words is "six hundred fifty-four million, eight hundred seventy-four thousand, three hundred eighty-one".