664262 has 8 divisors (see below), whose sum is σ = 1002000. Its totient is φ = 330264.

The previous prime is 664253. The next prime is 664271. The reversal of 664262 is 262466.

It is an interprime number because it is at equal distance from previous prime (664253) and next prime (664271).

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

It is a d-powerful number, because it can be written as 6⁶ + 6⁶ + 2 + 4 + 6⁶ + 2¹⁹ .

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, 437 + ... + 1232.

It is an arithmetic number, because the mean of its divisors is an integer number (125250).

2⁶⁶⁴²⁶² is an apocalyptic number.

664262 is a deficient number, since it is larger than the sum of its proper divisors (337738).

664262 is a wasteful number, since it uses less digits than its factorization.

664262 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1870.

The product of its digits is 3456, while the sum is 26.

The square root of 664262 is about 815.0226990704. The cubic root of 664262 is about 87.2528864435.

The spelling of 664262 in words is "six hundred sixty-four thousand, two hundred sixty-two".