396866678 has 8 divisors (see below), whose sum is σ = 641092368. Its totient is φ = 183169224.

The previous prime is 396866663. The next prime is 396866693. The reversal of 396866678 is 876668693.

It is an interprime number because it is at equal distance from previous prime (396866663) and next prime (396866693).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7632026 + ... + 7632077.

It is an arithmetic number, because the mean of its divisors is an integer number (80136546).

Almost surely, 2^396866678 is an apocalyptic number.

396866678 is a deficient number, since it is larger than the sum of its proper divisors (244225690).

396866678 is a wasteful number, since it uses less digits than its factorization.

396866678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15264118.

The product of its digits is 15676416, while the sum is 59.

The square root of 396866678 is about 19921.5129445532. The cubic root of 396866678 is about 734.8773781586.

It can be divided in two parts, 39686 and 6678, that added together give a palindrome (46364).

The spelling of 396866678 in words is "three hundred ninety-six million, eight hundred sixty-six thousand, six hundred seventy-eight".