641374 has 4 divisors (see below), whose sum is σ = 962064. Its totient is φ = 320686.

The previous prime is 641371. The next prime is 641387. The reversal of 641374 is 473146.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 473146 = 2 ⋅236573.

It is a super-2 number, since 2×641374² = 822721215752, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (641371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160342 + ... + 160345.

It is an arithmetic number, because the mean of its divisors is an integer number (240516).

2⁶⁴¹³⁷⁴ is an apocalyptic number.

641374 is a deficient number, since it is larger than the sum of its proper divisors (320690).

641374 is a wasteful number, since it uses less digits than its factorization.

641374 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 320689.

The product of its digits is 2016, while the sum is 25.

The square root of 641374 is about 800.8582895869. The cubic root of 641374 is about 86.2390142138.

The spelling of 641374 in words is "six hundred forty-one thousand, three hundred seventy-four".