1660070655 has 48 divisors (see below), whose sum is σ = 3179217600. Its totient is φ = 797051904.

The previous prime is 1660070651. The next prime is 1660070663. The reversal of 1660070655 is 5560700661.

It is a happy number.

It is not a de Polignac number, because 1660070655 - 2² = 1660070651 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1660070651) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 29580 + ... + 64769.

It is an arithmetic number, because the mean of its divisors is an integer number (66233700).

Almost surely, 2^1660070655 is an apocalyptic number.

1660070655 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1660070655 is a deficient number, since it is larger than the sum of its proper divisors (1519146945).

1660070655 is a wasteful number, since it uses less digits than its factorization.

1660070655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94400 (or 94397 counting only the distinct ones).

The product of its (nonzero) digits is 37800, while the sum is 36.

The square root of 1660070655 is about 40743.9646450858. The cubic root of 1660070655 is about 1184.0649462849.

The spelling of 1660070655 in words is "one billion, six hundred sixty million, seventy thousand, six hundred fifty-five".