641590134 has 16 divisors (see below), whose sum is σ = 1286681088. Its totient is φ = 213279912.

The previous prime is 641590133. The next prime is 641590141. The reversal of 641590134 is 431095146.

It is a super-2 number, since 2×641590134² = 823275800092275912, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 641590095 and 641590104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (641590133) 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, 143482 + ... + 147885.

It is an arithmetic number, because the mean of its divisors is an integer number (80417568).

Almost surely, 2^641590134 is an apocalyptic number.

641590134 is an abundant number, since it is smaller than the sum of its proper divisors (645090954).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

641590134 is a wasteful number, since it uses less digits than its factorization.

641590134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291739.

The product of its (nonzero) digits is 12960, while the sum is 33.

The square root of 641590134 is about 25329.6295669716. The cubic root of 641590134 is about 862.4870023666.

The spelling of 641590134 in words is "six hundred forty-one million, five hundred ninety thousand, one hundred thirty-four".