1669464 has 64 divisors (see below), whose sum is σ = 4752000. Its totient is φ = 542880.

The previous prime is 1669463. The next prime is 1669469. The reversal of 1669464 is 4649661.

It is a super-2 number, since 2×1669464² = 5574220094592, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is a nialpdrome in base 6.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1669463) 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, 12679 + ... + 12809.

It is an arithmetic number, because the mean of its divisors is an integer number (74250).

2^1669464 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1669464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2376000).

1669464 is an abundant number, since it is smaller than the sum of its proper divisors (3082536).

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

1669464 is a wasteful number, since it uses less digits than its factorization.

1669464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205 (or 195 counting only the distinct ones).

The product of its digits is 31104, while the sum is 36.

The square root of 1669464 is about 1292.0773970626. The cubic root of 1669464 is about 118.6294051817.

The spelling of 1669464 in words is "one million, six hundred sixty-nine thousand, four hundred sixty-four".