654020403 has 4 divisors (see below), whose sum is σ = 872027208. Its totient is φ = 436013600.

The previous prime is 654020401. The next prime is 654020417. The reversal of 654020403 is 304020456.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 654020403 - 2¹ = 654020401 is a prime.

It is not an unprimeable number, because it can be changed into a prime (654020401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 109003398 + ... + 109003403.

It is an arithmetic number, because the mean of its divisors is an integer number (218006802).

Almost surely, 2^654020403 is an apocalyptic number.

654020403 is a deficient number, since it is larger than the sum of its proper divisors (218006805).

654020403 is a wasteful number, since it uses less digits than its factorization.

654020403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218006804.

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 654020403 is about 25573.8226121947. The cubic root of 654020403 is about 868.0213999941.

Adding to 654020403 its reverse (304020456), we get a palindrome (958040859).

The spelling of 654020403 in words is "six hundred fifty-four million, twenty thousand, four hundred three".