1620914 has 4 divisors (see below), whose sum is σ = 2431374. Its totient is φ = 810456.

The previous prime is 1620893. The next prime is 1620917. The reversal of 1620914 is 4190261.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 1605289 + 15625 = 1267^2 + 125^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1620914.

It is not an unprimeable number, because it can be changed into a prime (1620917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 405227 + ... + 405230.

2^1620914 is an apocalyptic number.

1620914 is a deficient number, since it is larger than the sum of its proper divisors (810460).

1620914 is an equidigital number, since it uses as much as digits as its factorization.

1620914 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 810459.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 1620914 is about 1273.1512086159. The cubic root of 1620914 is about 117.4681126690.

The spelling of 1620914 in words is "one million, six hundred twenty thousand, nine hundred fourteen".