1625983 has 4 divisors (see below), whose sum is σ = 1634688. Its totient is φ = 1617280.

The previous prime is 1625977. The next prime is 1625989. The reversal of 1625983 is 3895261.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3895261 = 17 ⋅229133.

It is an interprime number because it is at equal distance from previous prime (1625977) and next prime (1625989).

It is a cyclic number.

It is not a de Polignac number, because 1625983 - 2⁵ = 1625951 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1625989) 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, 4066 + ... + 4447.

It is an arithmetic number, because the mean of its divisors is an integer number (408672).

2^1625983 is an apocalyptic number.

1625983 is a deficient number, since it is larger than the sum of its proper divisors (8705).

1625983 is an equidigital number, since it uses as much as digits as its factorization.

1625983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8704.

The product of its digits is 12960, while the sum is 34.

The square root of 1625983 is about 1275.1403844283. The cubic root of 1625983 is about 117.5904358844.

The spelling of 1625983 in words is "one million, six hundred twenty-five thousand, nine hundred eighty-three".