1648967 has 4 divisors (see below), whose sum is σ = 1669920. Its totient is φ = 1628016.

The previous prime is 1648963. The next prime is 1648987. The reversal of 1648967 is 7698461.

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

It is a cyclic number.

It is not a de Polignac number, because 1648967 - 2² = 1648963 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 (1648963) 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, 10358 + ... + 10515.

It is an arithmetic number, because the mean of its divisors is an integer number (417480).

2^1648967 is an apocalyptic number.

1648967 is a deficient number, since it is larger than the sum of its proper divisors (20953).

1648967 is an equidigital number, since it uses as much as digits as its factorization.

1648967 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20952.

The product of its digits is 72576, while the sum is 41.

The square root of 1648967 is about 1284.1211002082. The cubic root of 1648967 is about 118.1419100863.

The spelling of 1648967 in words is "one million, six hundred forty-eight thousand, nine hundred sixty-seven".