1669970 has 16 divisors (see below), whose sum is σ = 3103488. Its totient is φ = 646320.

The previous prime is 1669963. The next prime is 1669979. The reversal of 1669970 is 799661.

It is not an unprimeable number, because it can be changed into a prime (1669979) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2384 + ... + 3003.

It is an arithmetic number, because the mean of its divisors is an integer number (193968).

2^1669970 is an apocalyptic number.

1669970 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1669970 is a deficient number, since it is larger than the sum of its proper divisors (1433518).

1669970 is a wasteful number, since it uses less digits than its factorization.

1669970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5425.

The product of its (nonzero) digits is 20412, while the sum is 38.

The square root of 1669970 is about 1292.2731909314. The cubic root of 1669970 is about 118.6413891509.

The spelling of 1669970 in words is "one million, six hundred sixty-nine thousand, nine hundred seventy".