7636820 has 12 divisors (see below), whose sum is σ = 16037364. Its totient is φ = 3054720.

The previous prime is 7636813. The next prime is 7636829. The reversal of 7636820 is 286367.

It can be written as a sum of positive squares in 2 ways, for example, as 1175056 + 6461764 = 1084^2 + 2542^2 .

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7636829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 190901 + ... + 190940.

It is an arithmetic number, because the mean of its divisors is an integer number (1336447).

Almost surely, 2^7636820 is an apocalyptic number.

It is an amenable number.

7636820 is an abundant number, since it is smaller than the sum of its proper divisors (8400544).

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

7636820 is a wasteful number, since it uses less digits than its factorization.

7636820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 381850 (or 381848 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 32.

The square root of 7636820 is about 2763.4796905351. The cubic root of 7636820 is about 196.9265102473.

The spelling of 7636820 in words is "seven million, six hundred thirty-six thousand, eight hundred twenty".