641471934 has 16 divisors (see below), whose sum is σ = 1292175360. Its totient is φ = 212285400.

The previous prime is 641471927. The next prime is 641471947. The reversal of 641471934 is 439174146.

It is a super-2 number, since 2×641471934² = 822972484219400712, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 641471892 and 641471901.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 383742 + ... + 385409.

It is an arithmetic number, because the mean of its divisors is an integer number (80760960).

Almost surely, 2^641471934 is an apocalyptic number.

641471934 is an abundant number, since it is smaller than the sum of its proper divisors (650703426).

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

641471934 is a wasteful number, since it uses less digits than its factorization.

641471934 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 769295.

The product of its digits is 72576, while the sum is 39.

The square root of 641471934 is about 25327.2962236398. The cubic root of 641471934 is about 862.4340338543.

The spelling of 641471934 in words is "six hundred forty-one million, four hundred seventy-one thousand, nine hundred thirty-four".