678913562 has 4 divisors (see below), whose sum is σ = 1018370346. Its totient is φ = 339456780.

The previous prime is 678913561. The next prime is 678913579. The reversal of 678913562 is 265319876.

678913562 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 635997961 + 42915601 = 25219^2 + 6551^2 .

It is not an unprimeable number, because it can be changed into a prime (678913561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 169728389 + ... + 169728392.

Almost surely, 2^678913562 is an apocalyptic number.

678913562 is a deficient number, since it is larger than the sum of its proper divisors (339456784).

678913562 is a wasteful number, since it uses less digits than its factorization.

678913562 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 339456783.

The product of its digits is 544320, while the sum is 47.

The square root of 678913562 is about 26055.9697958069. The cubic root of 678913562 is about 878.8973629503.

The spelling of 678913562 in words is "six hundred seventy-eight million, nine hundred thirteen thousand, five hundred sixty-two".