1660055471 has 2 divisors, whose sum is σ = 1660055472. Its totient is φ = 1660055470.

The previous prime is 1660055461. The next prime is 1660055483. The reversal of 1660055471 is 1745500661.

It is a weak prime.

It is an emirp because it is prime and its reverse (1745500661) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1660055471 - 2¹⁸ = 1659793327 is a prime.

It is a super-3 number, since 3×1660055471³ (a number of 29 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1660055401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 830027735 + 830027736.

It is an arithmetic number, because the mean of its divisors is an integer number (830027736).

Almost surely, 2^1660055471 is an apocalyptic number.

1660055471 is a deficient number, since it is larger than the sum of its proper divisors (1).

1660055471 is an equidigital number, since it uses as much as digits as its factorization.

1660055471 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25200, while the sum is 35.

The square root of 1660055471 is about 40743.7783103138. The cubic root of 1660055471 is about 1184.0613362182.

The spelling of 1660055471 in words is "one billion, six hundred sixty million, fifty-five thousand, four hundred seventy-one".