1679540 has 24 divisors (see below), whose sum is σ = 3575040. Its totient is φ = 662688.

The previous prime is 1679539. The next prime is 1679599. The reversal of 1679540 is 459761.

It is a happy number.

It is a super-2 number, since 2×1679540² = 5641709223200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1679497 and 1679506.

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, 1049 + ... + 2111.

It is an arithmetic number, because the mean of its divisors is an integer number (148960).

2^1679540 is an apocalyptic number.

1679540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1679540 is an abundant number, since it is smaller than the sum of its proper divisors (1895500).

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

1679540 is a wasteful number, since it uses less digits than its factorization.

1679540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1151 (or 1149 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 32.

The square root of 1679540 is about 1295.9706786807. The cubic root of 1679540 is about 118.8675880486.

The spelling of 1679540 in words is "one million, six hundred seventy-nine thousand, five hundred forty".