641019 has 8 divisors (see below), whose sum is σ = 905040. Its totient is φ = 402176.

The previous prime is 640993. The next prime is 641051. The reversal of 641019 is 910146.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 641019 - 2⁷ = 640891 is a prime.

It is a super-2 number, since 2×641019² = 821810716722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 640986 and 641004.

It is not an unprimeable number, because it can be changed into a prime (641089) 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, 6234 + ... + 6335.

It is an arithmetic number, because the mean of its divisors is an integer number (113130).

2⁶⁴¹⁰¹⁹ is an apocalyptic number.

641019 is a deficient number, since it is larger than the sum of its proper divisors (264021).

641019 is a wasteful number, since it uses less digits than its factorization.

641019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12589.

The product of its (nonzero) digits is 216, while the sum is 21.

The square root of 641019 is about 800.6366216955. The cubic root of 641019 is about 86.2231002019.

The spelling of 641019 in words is "six hundred forty-one thousand, nineteen".