1660780422 has 240 divisors, whose sum is σ = 4743370368. Its totient is φ = 431101440.

The previous prime is 1660780417. The next prime is 1660780427. The reversal of 1660780422 is 2240870661.

1660780422 is a `hidden beast` number, since 1 + 6 + 607 + 8 + 0 + 42 + 2 = 666.

It is an interprime number because it is at equal distance from previous prime (1660780417) and next prime (1660780427).

It is a super-2 number, since 2×1660780422² = 5516383220196996168, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1660780427) by changing a digit.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 4183128 + ... + 4183524.

Almost surely, 2^1660780422 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1660780422, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2371685184).

1660780422 is an abundant number, since it is smaller than the sum of its proper divisors (3082589946).

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

1660780422 is a wasteful number, since it uses less digits than its factorization.

1660780422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 473 (or 457 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 1660780422 is about 40752.6738018501. The cubic root of 1660780422 is about 1184.2336721315.

The spelling of 1660780422 in words is "one billion, six hundred sixty million, seven hundred eighty thousand, four hundred twenty-two".