646550342 has 8 divisors (see below), whose sum is σ = 983111016. Its totient is φ = 318846672.

The previous prime is 646550323. The next prime is 646550357. The reversal of 646550342 is 243055646.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2214068 + ... + 2214359.

It is an arithmetic number, because the mean of its divisors is an integer number (122888877).

Almost surely, 2^646550342 is an apocalyptic number.

646550342 is a deficient number, since it is larger than the sum of its proper divisors (336560674).

646550342 is a wasteful number, since it uses less digits than its factorization.

646550342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4428502.

The product of its (nonzero) digits is 86400, while the sum is 35.

The square root of 646550342 is about 25427.3542076245. The cubic root of 646550342 is about 864.7039614212.

The spelling of 646550342 in words is "six hundred forty-six million, five hundred fifty thousand, three hundred forty-two".