1059661 has 8 divisors (see below), whose sum is σ = 1137024. Its totient is φ = 984000.

The previous prime is 1059647. The next prime is 1059671. The reversal of 1059661 is 1669501.

1059661 = T₈₃₉ + T₈₄₀ + T₈₄₁.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1059661 - 2¹¹ = 1057613 is a prime.

It is a super-2 number, since 2×1059661² = 2245762869842, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1059671) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1036 + ... + 1786.

It is an arithmetic number, because the mean of its divisors is an integer number (142128).

2^1059661 is an apocalyptic number.

1059661 is the 841-st centered triangular number.

It is an amenable number.

1059661 is a deficient number, since it is larger than the sum of its proper divisors (77363).

1059661 is an equidigital number, since it uses as much as digits as its factorization.

1059661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 851.

The product of its (nonzero) digits is 1620, while the sum is 28.

The square root of 1059661 is about 1029.3983679801. The cubic root of 1059661 is about 101.9504116258.

The spelling of 1059661 in words is "one million, fifty-nine thousand, six hundred sixty-one".