654721941 has 8 divisors (see below), whose sum is σ = 874140480. Its totient is φ = 435892352.

The previous prime is 654721877. The next prime is 654722017. The reversal of 654721941 is 149127456.

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 654721941 - 2⁶ = 654721877 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 654721941.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (654721541) 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 7 ways as a sum of consecutive naturals, for example, 144636 + ... + 149093.

It is an arithmetic number, because the mean of its divisors is an integer number (109267560).

Almost surely, 2^654721941 is an apocalyptic number.

It is an amenable number.

654721941 is a deficient number, since it is larger than the sum of its proper divisors (219418539).

654721941 is a wasteful number, since it uses less digits than its factorization.

654721941 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 294475.

The product of its digits is 60480, while the sum is 39.

The square root of 654721941 is about 25587.5348754037. The cubic root of 654721941 is about 868.3316514749.

The spelling of 654721941 in words is "six hundred fifty-four million, seven hundred twenty-one thousand, nine hundred forty-one".