1456669 has 4 divisors (see below), whose sum is σ = 1463260. Its totient is φ = 1450080.

The previous prime is 1456667. The next prime is 1456687. The reversal of 1456669 is 9666541.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 912025 + 544644 = 955^2 + 738^2 .

It is a cyclic number.

It is not a de Polignac number, because 1456669 - 2¹ = 1456667 is a prime.

It is a super-2 number, since 2×1456669² = 4243769151122, which contains 22 as substring.

It is a Duffinian number.

1456669 is a lucky number.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1456667) 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 3 ways as a sum of consecutive naturals, for example, 2952 + ... + 3409.

It is an arithmetic number, because the mean of its divisors is an integer number (365815).

2^1456669 is an apocalyptic number.

It is an amenable number.

1456669 is a deficient number, since it is larger than the sum of its proper divisors (6591).

1456669 is an equidigital number, since it uses as much as digits as its factorization.

1456669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6590.

The product of its digits is 38880, while the sum is 37.

The square root of 1456669 is about 1206.9254326594. The cubic root of 1456669 is about 113.3583787401.

The spelling of 1456669 in words is "one million, four hundred fifty-six thousand, six hundred sixty-nine".