964813 has 4 divisors (see below), whose sum is σ = 995968. Its totient is φ = 933660.

The previous prime is 964793. The next prime is 964823. The reversal of 964813 is 318469.

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: 318469 = 167 ⋅1907.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-964813 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31), and also a Moran number because the ratio is a prime number: 31123 = 964813 / (9 + 6 + 4 + 8 + 1 + 3).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (964823) 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, 15531 + ... + 15592.

It is an arithmetic number, because the mean of its divisors is an integer number (248992).

2⁹⁶⁴⁸¹³ is an apocalyptic number.

It is an amenable number.

964813 is a deficient number, since it is larger than the sum of its proper divisors (31155).

964813 is a wasteful number, since it uses less digits than its factorization.

964813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31154.

The product of its digits is 5184, while the sum is 31.

The square root of 964813 is about 982.2489501140. The cubic root of 964813 is about 98.8130676548.

The spelling of 964813 in words is "nine hundred sixty-four thousand, eight hundred thirteen".