996667646 has 16 divisors (see below), whose sum is σ = 1612472400. Its totient is φ = 459294528.

The previous prime is 996667583. The next prime is 996667649. The reversal of 996667646 is 646766699.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (996667649) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11951 + ... + 46218.

It is an arithmetic number, because the mean of its divisors is an integer number (100779525).

Almost surely, 2^996667646 is an apocalyptic number.

996667646 is a deficient number, since it is larger than the sum of its proper divisors (615804754).

996667646 is a wasteful number, since it uses less digits than its factorization.

996667646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58843.

The product of its digits is 17635968, while the sum is 59.

The square root of 996667646 is about 31570.0434906257. The cubic root of 996667646 is about 998.8879792014.

The spelling of 996667646 in words is "nine hundred ninety-six million, six hundred sixty-seven thousand, six hundred forty-six".