646296349 has 8 divisors (see below), whose sum is σ = 676640160. Its totient is φ = 616489776.

The previous prime is 646296337. The next prime is 646296379. The reversal of 646296349 is 943692646.

646296349 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 646296349 - 2⁷ = 646296221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (646296379) 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, 131847 + ... + 136660.

It is an arithmetic number, because the mean of its divisors is an integer number (84580020).

Almost surely, 2^646296349 is an apocalyptic number.

It is an amenable number.

646296349 is a deficient number, since it is larger than the sum of its proper divisors (30343811).

646296349 is a wasteful number, since it uses less digits than its factorization.

646296349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 268619.

The product of its digits is 1679616, while the sum is 49.

The square root of 646296349 is about 25422.3592335566. The cubic root of 646296349 is about 864.5907155247.

The spelling of 646296349 in words is "six hundred forty-six million, two hundred ninety-six thousand, three hundred forty-nine".