641676 has 24 divisors (see below), whose sum is σ = 1711360. Its totient is φ = 183312.

The previous prime is 641639. The next prime is 641681. The reversal of 641676 is 676146.

It is a nude number because it is divisible by every one of its digits.

It is an Ulam 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, 3736 + ... + 3903.

2⁶⁴¹⁶⁷⁶ is an apocalyptic number.

It is an amenable number.

641676 is an abundant number, since it is smaller than the sum of its proper divisors (1069684).

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

641676 is a wasteful number, since it uses less digits than its factorization.

641676 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7653 (or 7651 counting only the distinct ones).

The product of its digits is 6048, while the sum is 30.

The square root of 641676 is about 801.0468151113. The cubic root of 641676 is about 86.2525477088.

Subtracting from 641676 its product of digits (6048), we obtain a triangular number (635628 = T₁₁₂₇).

The spelling of 641676 in words is "six hundred forty-one thousand, six hundred seventy-six".