646101141 has 32 divisors (see below), whose sum is σ = 1021279488. Its totient is φ = 355622400.

The previous prime is 646101139. The next prime is 646101191. The reversal of 646101141 is 141101646.

It is not a de Polignac number, because 646101141 - 2¹ = 646101139 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (646101191) 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 31 ways as a sum of consecutive naturals, for example, 74361 + ... + 82593.

It is an arithmetic number, because the mean of its divisors is an integer number (31914984).

Almost surely, 2^646101141 is an apocalyptic number.

It is an amenable number.

646101141 is a deficient number, since it is larger than the sum of its proper divisors (375178347).

646101141 is a wasteful number, since it uses less digits than its factorization.

646101141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8381.

The product of its (nonzero) digits is 576, while the sum is 24.

The square root of 646101141 is about 25418.5196461163. The cubic root of 646101141 is about 864.5036594758.

Adding to 646101141 its reverse (141101646), we get a palindrome (787202787).

The spelling of 646101141 in words is "six hundred forty-six million, one hundred one thousand, one hundred forty-one".