1648979 has 8 divisors (see below), whose sum is σ = 1736448. Its totient is φ = 1563840.

The previous prime is 1648963. The next prime is 1648987. The reversal of 1648979 is 9798461.

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

It is a cyclic number.

It is not a de Polignac number, because 1648979 - 2⁴ = 1648963 is a prime.

It is a Duffinian number.

It is a plaindrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (1648909) 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, 974 + ... + 2060.

It is an arithmetic number, because the mean of its divisors is an integer number (217056).

2^1648979 is an apocalyptic number.

1648979 is a deficient number, since it is larger than the sum of its proper divisors (87469).

1648979 is a wasteful number, since it uses less digits than its factorization.

1648979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1165.

The product of its digits is 108864, while the sum is 44.

The square root of 1648979 is about 1284.1257726562. The cubic root of 1648979 is about 118.1421966696.

The spelling of 1648979 in words is "one million, six hundred forty-eight thousand, nine hundred seventy-nine".