1630868 has 6 divisors (see below), whose sum is σ = 2854026. Its totient is φ = 815432.

The previous prime is 1630859. The next prime is 1630891. The reversal of 1630868 is 8680361.

It can be written as a sum of positive squares in only one way, i.e., 824464 + 806404 = 908^2 + 898^2 .

It is a plaindrome in base 15.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 203855 + ... + 203862.

It is an arithmetic number, because the mean of its divisors is an integer number (475671).

2^1630868 is an apocalyptic number.

It is an amenable number.

1630868 is a deficient number, since it is larger than the sum of its proper divisors (1223158).

1630868 is a wasteful number, since it uses less digits than its factorization.

1630868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 407721 (or 407719 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 1630868 is about 1277.0544232726. The cubic root of 1630868 is about 117.7080785612.

The spelling of 1630868 in words is "one million, six hundred thirty thousand, eight hundred sixty-eight".