Search a number
-
+
678680654 = 2675064781
BaseRepresentation
bin101000011100111…
…101100001001110
31202022001112211112
4220130331201032
52342220240104
6151202252022
722550455541
oct5034754116
91668045745
10678680654
11319108903
1216b357012
13aa7b65b2
14661c8858
153e8b086e
hex2873d84e

678680654 has 8 divisors (see below), whose sum is σ = 1033215528. Its totient is φ = 334275480.

The previous prime is 678680641. The next prime is 678680669. The reversal of 678680654 is 456086876.

It is a happy number.

678680654 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a super-2 number, since 2×6786806542 = 921214860227735432, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2532257 + ... + 2532524.

It is an arithmetic number, because the mean of its divisors is an integer number (129151941).

Almost surely, 2678680654 is an apocalyptic number.

678680654 is a deficient number, since it is larger than the sum of its proper divisors (354534874).

678680654 is a wasteful number, since it uses less digits than its factorization.

678680654 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5064850.

The product of its (nonzero) digits is 1935360, while the sum is 50.

The square root of 678680654 is about 26051.5000335873. The cubic root of 678680654 is about 878.7968466494.

The spelling of 678680654 in words is "six hundred seventy-eight million, six hundred eighty thousand, six hundred fifty-four".

Divisors: 1 2 67 134 5064781 10129562 339340327 678680654