1664070 has 16 divisors (see below), whose sum is σ = 3993840. Its totient is φ = 443744.

The previous prime is 1664063. The next prime is 1664071. The reversal of 1664070 is 704661.

It is a self number, because there is not a number n which added to its sum of digits gives 1664070.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1664071) 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, 27705 + ... + 27764.

It is an arithmetic number, because the mean of its divisors is an integer number (249615).

2^1664070 is an apocalyptic number.

1664070 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1664070 is an abundant number, since it is smaller than the sum of its proper divisors (2329770).

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

1664070 is a wasteful number, since it uses less digits than its factorization.

1664070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55479.

The product of its (nonzero) digits is 1008, while the sum is 24.

The square root of 1664070 is about 1289.9883720406. The cubic root of 1664070 is about 118.5015043694.

The spelling of 1664070 in words is "one million, six hundred sixty-four thousand, seventy".