646354 has 8 divisors (see below), whose sum is σ = 977328. Its totient is φ = 320580.

The previous prime is 646339. The next prime is 646379. The reversal of 646354 is 453646.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 972 + ... + 1495.

It is an arithmetic number, because the mean of its divisors is an integer number (122166).

2⁶⁴⁶³⁵⁴ is an apocalyptic number.

646354 is a deficient number, since it is larger than the sum of its proper divisors (330974).

646354 is a wasteful number, since it uses less digits than its factorization.

646354 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2600.

The product of its digits is 8640, while the sum is 28.

The square root of 646354 is about 803.9614418615. The cubic root of 646354 is about 86.4616422533.

It can be divided in two parts, 646 and 354, that added together give a cube (1000 = 10³).

The spelling of 646354 in words is "six hundred forty-six thousand, three hundred fifty-four".