1678608 has 30 divisors (see below), whose sum is σ = 4698174. Its totient is φ = 559488.

The previous prime is 1678603. The next prime is 1678613. The reversal of 1678608 is 8068761.

It is an interprime number because it is at equal distance from previous prime (1678603) and next prime (1678613).

It can be written as a sum of positive squares in only one way, i.e., 1557504 + 121104 = 1248^2 + 348^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (1678601) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5685 + ... + 5972.

2^1678608 is an apocalyptic number.

1678608 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1678608 is an abundant number, since it is smaller than the sum of its proper divisors (3019566).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1678608 is a wasteful number, since it uses less digits than its factorization.

1678608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11671 (or 11662 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 36.

The square root of 1678608 is about 1295.6110527469. The cubic root of 1678608 is about 118.8455968902.

The spelling of 1678608 in words is "one million, six hundred seventy-eight thousand, six hundred eight".