964641 has 4 divisors (see below), whose sum is σ = 1286192. Its totient is φ = 643092.

The previous prime is 964637. The next prime is 964661. The reversal of 964641 is 146469.

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, and also an emirpimes, since its reverse is a distinct semiprime: 146469 = 3 ⋅48823.

It is not a de Polignac number, because 964641 - 2² = 964637 is a prime.

It is a D-number.

It is a Duffinian number.

It is a nialpdrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 964599 and 964608.

It is not an unprimeable number, because it can be changed into a prime (964661) by changing a digit.

It is an upside-down number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 160771 + ... + 160776.

It is an arithmetic number, because the mean of its divisors is an integer number (321548).

2⁹⁶⁴⁶⁴¹ is an apocalyptic number.

It is an amenable number.

964641 is a deficient number, since it is larger than the sum of its proper divisors (321551).

964641 is a wasteful number, since it uses less digits than its factorization.

964641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 321550.

The product of its digits is 5184, while the sum is 30.

The square root of 964641 is about 982.1613920329. The cubic root of 964641 is about 98.8071954088.

The spelling of 964641 in words is "nine hundred sixty-four thousand, six hundred forty-one".