678290287 has 8 divisors (see below), whose sum is σ = 687771200. Its totient is φ = 668831904.

The previous prime is 678290281. The next prime is 678290303. The reversal of 678290287 is 782092876.

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

It is a cyclic number.

It is not a de Polignac number, because 678290287 - 2³ = 678290279 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 678290287.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (678290281) 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, 60313 + ... + 70669.

It is an arithmetic number, because the mean of its divisors is an integer number (85971400).

Almost surely, 2^678290287 is an apocalyptic number.

678290287 is a deficient number, since it is larger than the sum of its proper divisors (9480913).

678290287 is a wasteful number, since it uses less digits than its factorization.

678290287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11265.

The product of its (nonzero) digits is 677376, while the sum is 49.

The square root of 678290287 is about 26044.0067385954. The cubic root of 678290287 is about 878.6283240506.

The spelling of 678290287 in words is "six hundred seventy-eight million, two hundred ninety thousand, two hundred eighty-seven".