662913 has 12 divisors (see below), whose sum is σ = 971620. Its totient is φ = 435456.

The previous prime is 662899. The next prime is 662917. The reversal of 662913 is 319266.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 288369 + 374544 = 537^2 + 612^2 .

It is not a de Polignac number, because 662913 - 2⁴ = 662897 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 662913.

It is not an unprimeable number, because it can be changed into a prime (662917) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 153 + ... + 1161.

2⁶⁶²⁹¹³ is an apocalyptic number.

It is an amenable number.

662913 is a deficient number, since it is larger than the sum of its proper divisors (308707).

662913 is a wasteful number, since it uses less digits than its factorization.

662913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1088 (or 1085 counting only the distinct ones).

The product of its digits is 1944, while the sum is 27.

The square root of 662913 is about 814.1946941610. The cubic root of 662913 is about 87.1937812949.

Subtracting from 662913 its product of digits (1944), we obtain a square (660969 = 813²).

It can be divided in two parts, 662 and 913, that multiplied together give a palindrome (604406).

The spelling of 662913 in words is "six hundred sixty-two thousand, nine hundred thirteen".