1999696 has 10 divisors (see below), whose sum is σ = 3874442. Its totient is φ = 999840.

The previous prime is 1999691. The next prime is 1999703. The reversal of 1999696 is 6969991.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1123600 + 876096 = 1060^2 + 936^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1999691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62475 + ... + 62506.

2^1999696 is an apocalyptic number.

1999696 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1999696 is a deficient number, since it is larger than the sum of its proper divisors (1874746).

1999696 is a wasteful number, since it uses less digits than its factorization.

1999696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124989 (or 124983 counting only the distinct ones).

The product of its digits is 236196, while the sum is 49.

The square root of 1999696 is about 1414.1060780578. The cubic root of 1999696 is about 125.9857210660.

The spelling of 1999696 in words is "one million, nine hundred ninety-nine thousand, six hundred ninety-six".