900629 has 4 divisors (see below), whose sum is σ = 917676. Its totient is φ = 883584.

The previous prime is 900623. The next prime is 900649. The reversal of 900629 is 926009.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 926009 = 7 ⋅132287.

It can be written as a sum of positive squares in 2 ways, for example, as 372100 + 528529 = 610^2 + 727^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-900629 is a prime.

It is a super-2 number, since 2×900629² = 1622265191282, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 900598 and 900607.

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, 8444 + ... + 8549.

It is an arithmetic number, because the mean of its divisors is an integer number (229419).

2⁹⁰⁰⁶²⁹ is an apocalyptic number.

It is an amenable number.

900629 is a deficient number, since it is larger than the sum of its proper divisors (17047).

900629 is a wasteful number, since it uses less digits than its factorization.

900629 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17046.

The product of its (nonzero) digits is 972, while the sum is 26.

The square root of 900629 is about 949.0147522563. The cubic root of 900629 is about 96.5714255495.

The spelling of 900629 in words is "nine hundred thousand, six hundred twenty-nine".