9686663425 has 12 divisors (see below), whose sum is σ = 12012872620. Its totient is φ = 7748421120.

The previous prime is 9686663419. The next prime is 9686663431. The reversal of 9686663425 is 5243666869.

It is an interprime number because it is at equal distance from previous prime (9686663419) and next prime (9686663431).

It can be written as a sum of positive squares in 6 ways, for example, as 1993443904 + 7693219521 = 44648^2 + 87711^2 .

It is not a de Polignac number, because 9686663425 - 2¹⁹ = 9686139137 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 266761 + ... + 300889.

Almost surely, 2^9686663425 is an apocalyptic number.

It is an amenable number.

9686663425 is a deficient number, since it is larger than the sum of its proper divisors (2326209195).

9686663425 is a wasteful number, since it uses less digits than its factorization.

9686663425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45492 (or 45487 counting only the distinct ones).

The product of its digits is 11197440, while the sum is 55.

The square root of 9686663425 is about 98420.8485281447. The cubic root of 9686663425 is about 2131.6933806913.

The spelling of 9686663425 in words is "nine billion, six hundred eighty-six million, six hundred sixty-three thousand, four hundred twenty-five".