7689445820 has 48 divisors (see below), whose sum is σ = 18953457600. Its totient is φ = 2565126144.

The previous prime is 7689445817. The next prime is 7689445823. The reversal of 7689445820 is 285449867.

It is an interprime number because it is at equal distance from previous prime (7689445817) and next prime (7689445823).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7689445823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 737045 + ... + 747404.

It is an arithmetic number, because the mean of its divisors is an integer number (394863700).

Almost surely, 2^7689445820 is an apocalyptic number.

7689445820 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

7689445820 is an abundant number, since it is smaller than the sum of its proper divisors (11264011780).

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

7689445820 is a wasteful number, since it uses less digits than its factorization.

7689445820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1484502 (or 1484500 counting only the distinct ones).

The product of its (nonzero) digits is 3870720, while the sum is 53.

The square root of 7689445820 is about 87689.4852305566. The cubic root of 7689445820 is about 1973.7781959689.

The spelling of 7689445820 in words is "seven billion, six hundred eighty-nine million, four hundred forty-five thousand, eight hundred twenty".