678772567 has 16 divisors (see below), whose sum is σ = 752523264. Its totient is φ = 607068000.

The previous prime is 678772561. The next prime is 678772597. The reversal of 678772567 is 765277876.

It is not a de Polignac number, because 678772567 - 2¹⁵ = 678739799 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (678772561) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 684442 + ... + 685432.

It is an arithmetic number, because the mean of its divisors is an integer number (47032704).

Almost surely, 2^678772567 is an apocalyptic number.

678772567 is a deficient number, since it is larger than the sum of its proper divisors (73750697).

678772567 is a wasteful number, since it uses less digits than its factorization.

678772567 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1950.

The product of its digits is 6914880, while the sum is 55.

The square root of 678772567 is about 26053.2640373524. The cubic root of 678772567 is about 878.8365163664.

The spelling of 678772567 in words is "six hundred seventy-eight million, seven hundred seventy-two thousand, five hundred sixty-seven".