1420686 has 16 divisors (see below), whose sum is σ = 3157200. Its totient is φ = 473544.

The previous prime is 1420667. The next prime is 1420697. The reversal of 1420686 is 6860241.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

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, 13101 + ... + 13208.

It is an arithmetic number, because the mean of its divisors is an integer number (197325).

2^1420686 is an apocalyptic number.

1420686 is an abundant number, since it is smaller than the sum of its proper divisors (1736514).

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

1420686 is a wasteful number, since it uses less digits than its factorization.

1420686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26320 (or 26314 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 1420686 is about 1191.9253332319. The cubic root of 1420686 is about 112.4171834943.

The spelling of 1420686 in words is "one million, four hundred twenty thousand, six hundred eighty-six".