900663 has 4 divisors (see below), whose sum is σ = 1200888. Its totient is φ = 600440.

The previous prime is 900659. The next prime is 900671. The reversal of 900663 is 366009.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 900663 - 2² = 900659 is a prime.

It is a super-2 number, since 2×900663² = 1622387679138, which contains 22 as substring.

It is a D-number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (900623) 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, 150108 + ... + 150113.

It is an arithmetic number, because the mean of its divisors is an integer number (300222).

2⁹⁰⁰⁶⁶³ is an apocalyptic number.

900663 is a deficient number, since it is larger than the sum of its proper divisors (300225).

900663 is a wasteful number, since it uses less digits than its factorization.

900663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300224.

The product of its (nonzero) digits is 972, while the sum is 24.

The square root of 900663 is about 949.0326654020. The cubic root of 900663 is about 96.5726407695.

The spelling of 900663 in words is "nine hundred thousand, six hundred sixty-three".