678950 has 24 divisors (see below), whose sum is σ = 1300512. Its totient is φ = 263520.

The previous prime is 678949. The next prime is 678959. The reversal of 678950 is 59876.

678950 is a Rhonda number in base 15.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 678950.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (678959) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1667 + ... + 2033.

It is an arithmetic number, because the mean of its divisors is an integer number (54188).

2⁶⁷⁸⁹⁵⁰ is an apocalyptic number.

678950 is a deficient number, since it is larger than the sum of its proper divisors (621562).

678950 is a wasteful number, since it uses less digits than its factorization.

678950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 416 (or 411 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 35.

The square root of 678950 is about 823.9842231499. The cubic root of 678950 is about 87.8913086449.

The spelling of 678950 in words is "six hundred seventy-eight thousand, nine hundred fifty".