678536494 has 8 divisors (see below), whose sum is σ = 1050637248. Its totient is φ = 328324080.

The previous prime is 678536491. The next prime is 678536497. The reversal of 678536494 is 494635876.

It is an interprime number because it is at equal distance from previous prime (678536491) and next prime (678536497).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (678536491) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5472007 + ... + 5472130.

It is an arithmetic number, because the mean of its divisors is an integer number (131329656).

Almost surely, 2^678536494 is an apocalyptic number.

678536494 is a deficient number, since it is larger than the sum of its proper divisors (372100754).

678536494 is a wasteful number, since it uses less digits than its factorization.

678536494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10944170.

The product of its digits is 4354560, while the sum is 52.

The square root of 678536494 is about 26048.7330594023. The cubic root of 678536494 is about 878.7346198747.

It can be divided in two parts, 67853 and 6494, that added together give a palindrome (74347).

The spelling of 678536494 in words is "six hundred seventy-eight million, five hundred thirty-six thousand, four hundred ninety-four".