1996650 has 120 divisors (see below), whose sum is σ = 6076620. Its totient is φ = 483840.

The previous prime is 1996649. The next prime is 1996681. The reversal of 1996650 is 566991.

It can be written as a sum of positive squares in 6 ways, for example, as 1034289 + 962361 = 1017^2 + 981^2 .

It is a super-2 number, since 2×1996650² = 7973222445000, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 68836 + ... + 68864.

2^1996650 is an apocalyptic number.

1996650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1996650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3038310).

1996650 is an abundant number, since it is smaller than the sum of its proper divisors (4079970).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1996650 is a wasteful number, since it uses less digits than its factorization.

1996650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70 (or 56 counting only the distinct ones).

The product of its (nonzero) digits is 14580, while the sum is 36.

The square root of 1996650 is about 1413.0286621297. The cubic root of 1996650 is about 125.9217200847.

It can be divided in two parts, 19 and 96650, that added together give a palindrome (96669).

The spelling of 1996650 in words is "one million, nine hundred ninety-six thousand, six hundred fifty".