3198678663 has 4 divisors (see below), whose sum is σ = 4264904888. Its totient is φ = 2132452440.

The previous prime is 3198678653. The next prime is 3198678667. The reversal of 3198678663 is 3668768913.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3668768913 = 3 ⋅1222922971.

It is not a de Polignac number, because 3198678663 - 2⁶ = 3198678599 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3198678667) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 533113108 + ... + 533113113.

It is an arithmetic number, because the mean of its divisors is an integer number (1066226222).

Almost surely, 2^3198678663 is an apocalyptic number.

3198678663 is a deficient number, since it is larger than the sum of its proper divisors (1066226225).

3198678663 is a wasteful number, since it uses less digits than its factorization.

3198678663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1066226224.

The product of its digits is 7838208, while the sum is 57.

The square root of 3198678663 is about 56556.8622096382. The cubic root of 3198678663 is about 1473.4097445691.

The spelling of 3198678663 in words is "three billion, one hundred ninety-eight million, six hundred seventy-eight thousand, six hundred sixty-three".