641137 has 4 divisors (see below), whose sum is σ = 732736. Its totient is φ = 549540.

The previous prime is 641131. The next prime is 641143. The reversal of 641137 is 731146.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (641131) and next prime (641143).

It is a cyclic number.

It is not a de Polignac number, because 641137 - 2³ = 641129 is a prime.

It is a super-2 number, since 2×641137² = 822113305538, which contains 22 as substring.

It is a Duffinian number.

641137 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (641131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45789 + ... + 45802.

It is an arithmetic number, because the mean of its divisors is an integer number (183184).

2⁶⁴¹¹³⁷ is an apocalyptic number.

It is an amenable number.

641137 is a deficient number, since it is larger than the sum of its proper divisors (91599).

641137 is an equidigital number, since it uses as much as digits as its factorization.

641137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91598.

The product of its digits is 504, while the sum is 22.

The square root of 641137 is about 800.7103096626. The cubic root of 641137 is about 86.2283905816.

Subtracting 641137 from its reverse (731146), we obtain a palindrome (90009).

The spelling of 641137 in words is "six hundred forty-one thousand, one hundred thirty-seven".