1660771463 has 16 divisors (see below), whose sum is σ = 1954826496. Its totient is φ = 1396293120.

The previous prime is 1660771459. The next prime is 1660771481. The reversal of 1660771463 is 3641770661.

It is a cyclic number.

It is not a de Polignac number, because 1660771463 - 2² = 1660771459 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1660771463.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1660771423) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 114356 + ... + 128057.

It is an arithmetic number, because the mean of its divisors is an integer number (122176656).

Almost surely, 2^1660771463 is an apocalyptic number.

1660771463 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1660771463 is a deficient number, since it is larger than the sum of its proper divisors (294055033).

1660771463 is a wasteful number, since it uses less digits than its factorization.

1660771463 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242474.

The product of its (nonzero) digits is 127008, while the sum is 41.

The square root of 1660771463 is about 40752.5638825338. The cubic root of 1660771463 is about 1184.2315426971.

The spelling of 1660771463 in words is "one billion, six hundred sixty million, seven hundred seventy-one thousand, four hundred sixty-three".