1401606 has 12 divisors (see below), whose sum is σ = 3036852. Its totient is φ = 467196.

The previous prime is 1401601. The next prime is 1401607. The reversal of 1401606 is 6061041.

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 77867 = 1401606 / (1 + 4 + 0 + 1 + 6 + 0 + 6).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1401601) 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, 38916 + ... + 38951.

It is an arithmetic number, because the mean of its divisors is an integer number (253071).

2^1401606 is an apocalyptic number.

1401606 is an abundant number, since it is smaller than the sum of its proper divisors (1635246).

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

1401606 is a wasteful number, since it uses less digits than its factorization.

1401606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77875 (or 77872 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 1401606 is about 1183.8944209684. The cubic root of 1401606 is about 111.9116543959.

Adding to 1401606 its reverse (6061041), we get a palindrome (7462647).

The spelling of 1401606 in words is "one million, four hundred one thousand, six hundred six".