1656061 has 4 divisors (see below), whose sum is σ = 1806624. Its totient is φ = 1505500.

The previous prime is 1656049. The next prime is 1656073. The reversal of 1656061 is 1606561.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1606561 = 11 ⋅146051.

It is an interprime number because it is at equal distance from previous prime (1656049) and next prime (1656073).

It is a cyclic number.

It is not a de Polignac number, because 1656061 - 2¹¹ = 1654013 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 (1656761) 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, 75265 + ... + 75286.

It is an arithmetic number, because the mean of its divisors is an integer number (451656).

2^1656061 is an apocalyptic number.

1656061 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1656061 is a deficient number, since it is larger than the sum of its proper divisors (150563).

1656061 is a wasteful number, since it uses less digits than its factorization.

1656061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150562.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 1656061 is about 1286.8803363173. The cubic root of 1656061 is about 118.3110866508.

It can be divided in two parts, 165 and 6061, that added together give a palindrome (6226).

The spelling of 1656061 in words is "one million, six hundred fifty-six thousand, sixty-one".