1648061 has 4 divisors (see below), whose sum is σ = 1686432. Its totient is φ = 1609692.

The previous prime is 1648057. The next prime is 1648063. The reversal of 1648061 is 1608461.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1648061 - 2² = 1648057 is a prime.

It is a super-2 number, since 2×1648061² = 5432210119442, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1648061.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1648063) 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, 19121 + ... + 19206.

It is an arithmetic number, because the mean of its divisors is an integer number (421608).

2^1648061 is an apocalyptic number.

It is an amenable number.

1648061 is a deficient number, since it is larger than the sum of its proper divisors (38371).

1648061 is an equidigital number, since it uses as much as digits as its factorization.

1648061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38370.

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 1648061 is about 1283.7682812720. The cubic root of 1648061 is about 118.1202690266.

The spelling of 1648061 in words is "one million, six hundred forty-eight thousand, sixty-one".