642275607 has 4 divisors (see below), whose sum is σ = 856367480. Its totient is φ = 428183736.

The previous prime is 642275597. The next prime is 642275653. The reversal of 642275607 is 706572246.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 642275607 - 2¹⁰ = 642274583 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 (642275407) by changing a digit.

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, 107045932 + ... + 107045937.

It is an arithmetic number, because the mean of its divisors is an integer number (214091870).

Almost surely, 2^642275607 is an apocalyptic number.

642275607 is a deficient number, since it is larger than the sum of its proper divisors (214091873).

642275607 is a wasteful number, since it uses less digits than its factorization.

642275607 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214091872.

The product of its (nonzero) digits is 141120, while the sum is 39.

The square root of 642275607 is about 25343.1570053930. The cubic root of 642275607 is about 862.7940525622.

The spelling of 642275607 in words is "six hundred forty-two million, two hundred seventy-five thousand, six hundred seven".