641366 has 8 divisors (see below), whose sum is σ = 1049544. Its totient is φ = 291520.

The previous prime is 641327. The next prime is 641371. The reversal of 641366 is 663146.

641366 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a super-2 number, since 2×641366² = 822700691912, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14555 + ... + 14598.

It is an arithmetic number, because the mean of its divisors is an integer number (131193).

2⁶⁴¹³⁶⁶ is an apocalyptic number.

641366 is a deficient number, since it is larger than the sum of its proper divisors (408178).

641366 is a wasteful number, since it uses less digits than its factorization.

641366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29166.

The product of its digits is 2592, while the sum is 26.

The square root of 641366 is about 800.8532949299. The cubic root of 641366 is about 86.2386556528.

The spelling of 641366 in words is "six hundred forty-one thousand, three hundred sixty-six".