678950403 has 8 divisors (see below), whose sum is σ = 958518288. Its totient is φ = 426008064.

The previous prime is 678950399. The next prime is 678950423. The reversal of 678950403 is 304059876.

It is a happy number.

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

It is not a de Polignac number, because 678950403 - 2² = 678950399 is a prime.

It is not an unprimeable number, because it can be changed into a prime (678950423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6656326 + ... + 6656427.

It is an arithmetic number, because the mean of its divisors is an integer number (119814786).

Almost surely, 2^678950403 is an apocalyptic number.

678950403 is a deficient number, since it is larger than the sum of its proper divisors (279567885).

678950403 is a wasteful number, since it uses less digits than its factorization.

678950403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13312773.

The product of its (nonzero) digits is 181440, while the sum is 42.

The square root of 678950403 is about 26056.6767451262. The cubic root of 678950403 is about 878.9132603458.

The spelling of 678950403 in words is "six hundred seventy-eight million, nine hundred fifty thousand, four hundred three".