678962045 has 18 divisors (see below), whose sum is σ = 837232254. Its totient is φ = 528580080.

The previous prime is 678962023. The next prime is 678962051. The reversal of 678962045 is 540269876.

678962045 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 543169636 + 135792409 = 23306^2 + 11653^2 .

It is a de Polignac number, because none of the positive numbers 2^k-678962045 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 2505260 + ... + 2505530.

It is an arithmetic number, because the mean of its divisors is an integer number (46512903).

Almost surely, 2^678962045 is an apocalyptic number.

It is an amenable number.

678962045 is a deficient number, since it is larger than the sum of its proper divisors (158270209).

678962045 is an frugal number, since it uses more digits than its factorization.

678962045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 633 (or 319 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 47.

The square root of 678962045 is about 26056.9001418050. The cubic root of 678962045 is about 878.9182839085.

The spelling of 678962045 in words is "six hundred seventy-eight million, nine hundred sixty-two thousand, forty-five".