663662 has 8 divisors (see below), whose sum is σ = 1018776. Its totient is φ = 324072.

The previous prime is 663661. The next prime is 663683. The reversal of 663662 is 266366.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (663661) 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, 3773 + ... + 3944.

It is an arithmetic number, because the mean of its divisors is an integer number (127347).

2⁶⁶³⁶⁶² is an apocalyptic number.

663662 is a deficient number, since it is larger than the sum of its proper divisors (355114).

663662 is a wasteful number, since it uses less digits than its factorization.

663662 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7762.

The product of its digits is 7776, while the sum is 29.

The square root of 663662 is about 814.6545280056. The cubic root of 663662 is about 87.2266079057.

The spelling of 663662 in words is "six hundred sixty-three thousand, six hundred sixty-two".