669416 has 16 divisors (see below), whose sum is σ = 1369440. Its totient is φ = 304240.

The previous prime is 669413. The next prime is 669419. The reversal of 669416 is 614966.

669416 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (669413) and next prime (669419).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (669413) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3716 + ... + 3891.

It is an arithmetic number, because the mean of its divisors is an integer number (85590).

2⁶⁶⁹⁴¹⁶ is an apocalyptic number.

It is an amenable number.

669416 is an abundant number, since it is smaller than the sum of its proper divisors (700024).

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

669416 is a wasteful number, since it uses less digits than its factorization.

669416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7624 (or 7620 counting only the distinct ones).

The product of its digits is 7776, while the sum is 32.

The square root of 669416 is about 818.1784646396. The cubic root of 669416 is about 87.4779699641.

The spelling of 669416 in words is "six hundred sixty-nine thousand, four hundred sixteen".