1566741 has 16 divisors (see below), whose sum is σ = 2299968. Its totient is φ = 940800.

The previous prime is 1566739. The next prime is 1566743. The reversal of 1566741 is 1476651.

It is an interprime number because it is at equal distance from previous prime (1566739) and next prime (1566743).

It is not a de Polignac number, because 1566741 - 2¹ = 1566739 is a prime.

It is a super-2 number, since 2×1566741² = 4909354722162, which contains 22 as substring.

It is a zygodrome in base 4.

It is a junction number, because it is equal to n+sod(n) for n = 1566699 and 1566708.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1566743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6381 + ... + 6621.

It is an arithmetic number, because the mean of its divisors is an integer number (143748).

2^1566741 is an apocalyptic number.

1566741 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1566741 is the 723-rd octagonal number.

It is an amenable number.

1566741 is a deficient number, since it is larger than the sum of its proper divisors (733227).

1566741 is a wasteful number, since it uses less digits than its factorization.

1566741 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 452.

The product of its digits is 5040, while the sum is 30.

The square root of 1566741 is about 1251.6952504504. The cubic root of 1566741 is about 116.1446125477.

The spelling of 1566741 in words is "one million, five hundred sixty-six thousand, seven hundred forty-one".