7698985420 has 24 divisors (see below), whose sum is σ = 18477565344. Its totient is φ = 2639652096.

The previous prime is 7698985417. The next prime is 7698985423. The reversal of 7698985420 is 245898967.

It is an interprime number because it is at equal distance from previous prime (7698985417) and next prime (7698985423).

It is a hoax number, since the sum of its digits (58) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (7698985423) 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 7 ways as a sum of consecutive naturals, for example, 27496237 + ... + 27496516.

It is an arithmetic number, because the mean of its divisors is an integer number (769898556).

Almost surely, 2^7698985420 is an apocalyptic number.

7698985420 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

7698985420 is an abundant number, since it is smaller than the sum of its proper divisors (10778579924).

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

7698985420 is a wasteful number, since it uses less digits than its factorization.

7698985420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54992769 (or 54992767 counting only the distinct ones).

The product of its (nonzero) digits is 8709120, while the sum is 58.

The square root of 7698985420 is about 87743.8625773906. The cubic root of 7698985420 is about 1974.5940880275.

It can be divided in two parts, 76989 and 85420, that added together give a square (162409 = 403²).

The spelling of 7698985420 in words is "seven billion, six hundred ninety-eight million, nine hundred eighty-five thousand, four hundred twenty".