1396580 has 12 divisors (see below), whose sum is σ = 2932860. Its totient is φ = 558624.

The previous prime is 1396579. The next prime is 1396607. The reversal of 1396580 is 856931.

1396580 = T₂₄₄ + T₂₄₅ + ... + T₂₈₃.

It can be written as a sum of positive squares in 2 ways, for example, as 195364 + 1201216 = 442^2 + 1096^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34895 + ... + 34934.

It is an arithmetic number, because the mean of its divisors is an integer number (244405).

2^1396580 is an apocalyptic number.

1396580 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1396580 is an abundant number, since it is smaller than the sum of its proper divisors (1536280).

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

1396580 is a wasteful number, since it uses less digits than its factorization.

1396580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69838 (or 69836 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 1396580 is about 1181.7698591519. The cubic root of 1396580 is about 111.7777266890. Note that the first 4 decimals are identical.

The spelling of 1396580 in words is "one million, three hundred ninety-six thousand, five hundred eighty".