1401686 has 32 divisors (see below), whose sum is σ = 2570400. Its totient is φ = 567840.

The previous prime is 1401683. The next prime is 1401703. The reversal of 1401686 is 6861041.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1401683) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 48320 + ... + 48348.

It is an arithmetic number, because the mean of its divisors is an integer number (80325).

2^1401686 is an apocalyptic number.

1401686 is a deficient number, since it is larger than the sum of its proper divisors (1168714).

1401686 is a wasteful number, since it uses less digits than its factorization.

1401686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81 (or 55 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 1401686 is about 1183.9282072829. The cubic root of 1401686 is about 111.9137835635.

The spelling of 1401686 in words is "one million, four hundred one thousand, six hundred eighty-six".