1678607285 has 8 divisors (see below), whose sum is σ = 2132818776. Its totient is φ = 1263892480.

The previous prime is 1678607279. The next prime is 1678607299. The reversal of 1678607285 is 5827068761.

It can be written as a sum of positive squares in 4 ways, for example, as 868009444 + 810597841 = 29462^2 + 28471^2 .

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

It is not a de Polignac number, because 1678607285 - 2²⁴ = 1661830069 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9874076 + ... + 9874245.

It is an arithmetic number, because the mean of its divisors is an integer number (266602347).

Almost surely, 2^1678607285 is an apocalyptic number.

It is an amenable number.

1678607285 is a deficient number, since it is larger than the sum of its proper divisors (454211491).

1678607285 is a wasteful number, since it uses less digits than its factorization.

1678607285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19748343.

The product of its (nonzero) digits is 1128960, while the sum is 50.

The square root of 1678607285 is about 40970.8101579649. The cubic root of 1678607285 is about 1188.4558001618.

The spelling of 1678607285 in words is "one billion, six hundred seventy-eight million, six hundred seven thousand, two hundred eighty-five".