1061664 has 24 divisors (see below), whose sum is σ = 2787120. Its totient is φ = 353856.

The previous prime is 1061651. The next prime is 1061677. The reversal of 1061664 is 4661601.

It is an interprime number because it is at equal distance from previous prime (1061651) and next prime (1061677).

It is a tau number, because it is divible by the number of its divisors (24).

It is a super-2 number, since 2×1061664² = 2254260897792, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5434 + ... + 5625.

It is an arithmetic number, because the mean of its divisors is an integer number (116130).

2^1061664 is an apocalyptic number.

It is an amenable number.

1061664 is an abundant number, since it is smaller than the sum of its proper divisors (1725456).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1061664 is a wasteful number, since it uses less digits than its factorization.

1061664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11072 (or 11064 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 1061664 is about 1030.3708070399. The cubic root of 1061664 is about 102.0146076734.

It can be divided in two parts, 106 and 1664, that added together give a triangular number (1770 = T₅₉).

The spelling of 1061664 in words is "one million, sixty-one thousand, six hundred sixty-four".