642330177 has 16 divisors (see below), whose sum is σ = 903726720. Its totient is φ = 404995712.

The previous prime is 642330163. The next prime is 642330197. The reversal of 642330177 is 771033246.

It is a cyclic number.

It is not a de Polignac number, because 642330177 - 2⁷ = 642330049 is a prime.

It is not an unprimeable number, because it can be changed into a prime (642330127) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46158 + ... + 58439.

It is an arithmetic number, because the mean of its divisors is an integer number (56482920).

Almost surely, 2^642330177 is an apocalyptic number.

It is an amenable number.

642330177 is a deficient number, since it is larger than the sum of its proper divisors (261396543).

642330177 is a wasteful number, since it uses less digits than its factorization.

642330177 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104712.

The product of its (nonzero) digits is 21168, while the sum is 33.

The square root of 642330177 is about 25344.2336045105. The cubic root of 642330177 is about 862.8184872117.

The spelling of 642330177 in words is "six hundred forty-two million, three hundred thirty thousand, one hundred seventy-seven".