678546052 has 6 divisors (see below), whose sum is σ = 1187455598. Its totient is φ = 339273024.

The previous prime is 678546047. The next prime is 678546091. The reversal of 678546052 is 250645876.

It can be written as a sum of positive squares in only one way, i.e., 354041856 + 324504196 = 18816^2 + 18014^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84818253 + ... + 84818260.

Almost surely, 2^678546052 is an apocalyptic number.

It is an amenable number.

678546052 is a deficient number, since it is larger than the sum of its proper divisors (508909546).

678546052 is a wasteful number, since it uses less digits than its factorization.

678546052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169636517 (or 169636515 counting only the distinct ones).

The product of its (nonzero) digits is 403200, while the sum is 43.

The square root of 678546052 is about 26048.9165225734. The cubic root of 678546052 is about 878.7387458655.

The spelling of 678546052 in words is "six hundred seventy-eight million, five hundred forty-six thousand, fifty-two".