1402665 has 16 divisors (see below), whose sum is σ = 2448576. Its totient is φ = 680000.

The previous prime is 1402603. The next prime is 1402673. The reversal of 1402665 is 5662041.

It is not a de Polignac number, because 1402665 - 2⁹ = 1402153 is a prime.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

1402665 is a lucky number.

It is a plaindrome in base 12.

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 15 ways as a sum of consecutive naturals, for example, 4086 + ... + 4415.

It is an arithmetic number, because the mean of its divisors is an integer number (153036).

2^1402665 is an apocalyptic number.

1402665 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1402665 is a deficient number, since it is larger than the sum of its proper divisors (1045911).

1402665 is a wasteful number, since it uses less digits than its factorization.

1402665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8520.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 1402665 is about 1184.3415892385. The cubic root of 1402665 is about 111.9398326919.

The spelling of 1402665 in words is "one million, four hundred two thousand, six hundred sixty-five".