1648466 has 4 divisors (see below), whose sum is σ = 2472702. Its totient is φ = 824232.

The previous prime is 1648453. The next prime is 1648481. The reversal of 1648466 is 6648461.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6648461 = 19 ⋅349919.

It can be written as a sum of positive squares in only one way, i.e., 1575025 + 73441 = 1255^2 + 271^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 412115 + ... + 412118.

2^1648466 is an apocalyptic number.

1648466 is a deficient number, since it is larger than the sum of its proper divisors (824236).

1648466 is an equidigital number, since it uses as much as digits as its factorization.

1648466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 824235.

The product of its digits is 27648, while the sum is 35.

The square root of 1648466 is about 1283.9260103293. The cubic root of 1648466 is about 118.1299439902.

The spelling of 1648466 in words is "one million, six hundred forty-eight thousand, four hundred sixty-six".