1678125 has 24 divisors (see below), whose sum is σ = 2812320. Its totient is φ = 890000.

The previous prime is 1678111. The next prime is 1678129. The reversal of 1678125 is 5218761.

It is not a de Polignac number, because 1678125 - 2⁵ = 1678093 is a prime.

It is a super-2 number, since 2×1678125² = 5632207031250, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a junction number, because it is equal to n+sod(n) for n = 1678092 and 1678101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1678129) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9286 + ... + 9464.

It is an arithmetic number, because the mean of its divisors is an integer number (117180).

2^1678125 is an apocalyptic number.

1678125 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1678125 is a deficient number, since it is larger than the sum of its proper divisors (1134195).

1678125 is an frugal number, since it uses more digits than its factorization.

1678125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207 (or 187 counting only the distinct ones).

The product of its digits is 3360, while the sum is 30.

The square root of 1678125 is about 1295.4246408032. The cubic root of 1678125 is about 118.8341969823.

The spelling of 1678125 in words is "one million, six hundred seventy-eight thousand, one hundred twenty-five".