648429 has 8 divisors (see below), whose sum is σ = 868512. Its totient is φ = 430320.

The previous prime is 648391. The next prime is 648433. The reversal of 648429 is 924846.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 648429 - 2⁸ = 648173 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 648429.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 648429.

It is not an unprimeable number, because it can be changed into a prime (648449) 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, 667 + ... + 1319.

It is an arithmetic number, because the mean of its divisors is an integer number (108564).

2⁶⁴⁸⁴²⁹ is an apocalyptic number.

It is an amenable number.

648429 is a deficient number, since it is larger than the sum of its proper divisors (220083).

648429 is a wasteful number, since it uses less digits than its factorization.

648429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 987.

The product of its digits is 13824, while the sum is 33.

The square root of 648429 is about 805.2508925794. The cubic root of 648429 is about 86.5540664585.

The spelling of 648429 in words is "six hundred forty-eight thousand, four hundred twenty-nine".