1973636 has 12 divisors (see below), whose sum is σ = 3947328. Its totient is φ = 845832.

The previous prime is 1973633. The next prime is 1973651. The reversal of 1973636 is 6363791.

1973636 is an admirable number.

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 1973596 and 1973605.

It is not an unprimeable number, because it can be changed into a prime (1973633) 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, 35216 + ... + 35271.

It is an arithmetic number, because the mean of its divisors is an integer number (328944).

2^1973636 is an apocalyptic number.

It is an amenable number.

1973636 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1973636 is a wasteful number, since it uses less digits than its factorization.

1973636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70498 (or 70496 counting only the distinct ones).

The product of its digits is 20412, while the sum is 35.

The square root of 1973636 is about 1404.8615590157. The cubic root of 1973636 is about 125.4360451483.

The spelling of 1973636 in words is "one million, nine hundred seventy-three thousand, six hundred thirty-six".