678793045 has 16 divisors (see below), whose sum is σ = 935101440. Its totient is φ = 463365504.

The previous prime is 678793001. The next prime is 678793061. The reversal of 678793045 is 540397876.

It is a happy number.

It is not a de Polignac number, because 678793045 - 2¹⁹ = 678268757 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 678793045.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35680 + ... + 51289.

It is an arithmetic number, because the mean of its divisors is an integer number (58443840).

Almost surely, 2^678793045 is an apocalyptic number.

It is an amenable number.

678793045 is a deficient number, since it is larger than the sum of its proper divisors (256308395).

678793045 is a wasteful number, since it uses less digits than its factorization.

678793045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87204.

The product of its (nonzero) digits is 1270080, while the sum is 49.

The square root of 678793045 is about 26053.6570369689. The cubic root of 678793045 is about 878.8453541981.

The spelling of 678793045 in words is "six hundred seventy-eight million, seven hundred ninety-three thousand, forty-five".