642376783 has 8 divisors (see below), whose sum is σ = 646616880. Its totient is φ = 638144640.

The previous prime is 642376769. The next prime is 642376789. The reversal of 642376783 is 387673246.

642376783 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 642376783 - 2⁵ = 642376751 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 (642376789) 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, 300663 + ... + 302791.

It is an arithmetic number, because the mean of its divisors is an integer number (80827110).

Almost surely, 2^642376783 is an apocalyptic number.

642376783 is a deficient number, since it is larger than the sum of its proper divisors (4240097).

642376783 is a wasteful number, since it uses less digits than its factorization.

642376783 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3977.

The product of its digits is 1016064, while the sum is 46.

The square root of 642376783 is about 25345.1530474764. The cubic root of 642376783 is about 862.8393547485.

The spelling of 642376783 in words is "six hundred forty-two million, three hundred seventy-six thousand, seven hundred eighty-three".