7676820 has 36 divisors (see below), whose sum is σ = 23286900. Its totient is φ = 2047104.

The previous prime is 7676819. The next prime is 7676821. The reversal of 7676820 is 286767.

It is an interprime number because it is at equal distance from previous prime (7676819) and next prime (7676821).

It can be written as a sum of positive squares in 2 ways, for example, as 3732624 + 3944196 = 1932^2 + 1986^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7676821) 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 11 ways as a sum of consecutive naturals, for example, 21145 + ... + 21504.

Almost surely, 2^7676820 is an apocalyptic number.

It is an amenable number.

7676820 is an abundant number, since it is smaller than the sum of its proper divisors (15610080).

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

7676820 is a wasteful number, since it uses less digits than its factorization.

7676820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42664 (or 42659 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 36.

The square root of 7676820 is about 2770.7074908767. The cubic root of 7676820 is about 197.2697310955.

The spelling of 7676820 in words is "seven million, six hundred seventy-six thousand, eight hundred twenty".