642785350 has 12 divisors (see below), whose sum is σ = 1195580844. Its totient is φ = 257114120.

The previous prime is 642785321. The next prime is 642785357. The reversal of 642785350 is 53587246.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (642785357) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6427804 + ... + 6427903.

It is an arithmetic number, because the mean of its divisors is an integer number (99631737).

Almost surely, 2^642785350 is an apocalyptic number.

642785350 is a deficient number, since it is larger than the sum of its proper divisors (552795494).

642785350 is a wasteful number, since it uses less digits than its factorization.

642785350 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12855719 (or 12855714 counting only the distinct ones).

The product of its (nonzero) digits is 201600, while the sum is 40.

The square root of 642785350 is about 25353.2118280899. The cubic root of 642785350 is about 863.0222448029.

The spelling of 642785350 in words is "six hundred forty-two million, seven hundred eighty-five thousand, three hundred fifty".