1629970 has 8 divisors (see below), whose sum is σ = 2933964. Its totient is φ = 651984.

The previous prime is 1629937. The next prime is 1629983. The reversal of 1629970 is 799261.

It can be written as a sum of positive squares in 2 ways, for example, as 1490841 + 139129 = 1221^2 + 373^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

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 3 ways as a sum of consecutive naturals, for example, 81489 + ... + 81508.

2^1629970 is an apocalyptic number.

1629970 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1629970 is a deficient number, since it is larger than the sum of its proper divisors (1303994).

1629970 is a wasteful number, since it uses less digits than its factorization.

1629970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163004.

The product of its (nonzero) digits is 6804, while the sum is 34.

The square root of 1629970 is about 1276.7027845196. The cubic root of 1629970 is about 117.6864701782.

The spelling of 1629970 in words is "one million, six hundred twenty-nine thousand, nine hundred seventy".