1660555070 has 32 divisors (see below), whose sum is σ = 3178033056. Its totient is φ = 622540800.

The previous prime is 1660555069. The next prime is 1660555093. The reversal of 1660555070 is 705550661.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1660555070.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20705 + ... + 61235.

It is an arithmetic number, because the mean of its divisors is an integer number (99313533).

Almost surely, 2^1660555070 is an apocalyptic number.

1660555070 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1660555070 is a deficient number, since it is larger than the sum of its proper divisors (1517477986).

1660555070 is a wasteful number, since it uses less digits than its factorization.

1660555070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40796.

The product of its (nonzero) digits is 31500, while the sum is 35.

The square root of 1660555070 is about 40749.9088342539. The cubic root of 1660555070 is about 1184.1801066522.

The spelling of 1660555070 in words is "one billion, six hundred sixty million, five hundred fifty-five thousand, seventy".