1648907 has 4 divisors (see below), whose sum is σ = 1775760. Its totient is φ = 1522056.

The previous prime is 1648879. The next prime is 1648909. The reversal of 1648907 is 7098461.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7098461 = 541 ⋅13121.

It is a cyclic number.

It is not a de Polignac number, because 1648907 - 2¹⁴ = 1632523 is a prime.

It is a Duffinian number.

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 3 ways as a sum of consecutive naturals, for example, 63407 + ... + 63432.

It is an arithmetic number, because the mean of its divisors is an integer number (443940).

2^1648907 is an apocalyptic number.

1648907 is a deficient number, since it is larger than the sum of its proper divisors (126853).

1648907 is a wasteful number, since it uses less digits than its factorization.

1648907 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126852.

The product of its (nonzero) digits is 12096, while the sum is 35.

The square root of 1648907 is about 1284.0977377131. The cubic root of 1648907 is about 118.1404771486.

The spelling of 1648907 in words is "one million, six hundred forty-eight thousand, nine hundred seven".