646333442 has 8 divisors (see below), whose sum is σ = 1011652416. Its totient is φ = 309115972.

The previous prime is 646333417. The next prime is 646333447. The reversal of 646333442 is 244333646.

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

It is not an unprimeable number, because it can be changed into a prime (646333447) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7025318 + ... + 7025409.

It is an arithmetic number, because the mean of its divisors is an integer number (126456552).

Almost surely, 2^646333442 is an apocalyptic number.

646333442 is a deficient number, since it is larger than the sum of its proper divisors (365318974).

646333442 is a wasteful number, since it uses less digits than its factorization.

646333442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14050752.

The product of its digits is 124416, while the sum is 35.

The square root of 646333442 is about 25423.0887580561. The cubic root of 646333442 is about 864.6072557439.

The spelling of 646333442 in words is "six hundred forty-six million, three hundred thirty-three thousand, four hundred forty-two".