1660600481 has 2 divisors, whose sum is σ = 1660600482. Its totient is φ = 1660600480.

The previous prime is 1660600453. The next prime is 1660600507. The reversal of 1660600481 is 1840060661.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1182740881 + 477859600 = 34391^2 + 21860^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1660600481 is a prime.

It is a super-2 number, since 2×1660600481² = 5515187914994862722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1660600411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 830300240 + 830300241.

It is an arithmetic number, because the mean of its divisors is an integer number (830300241).

Almost surely, 2^1660600481 is an apocalyptic number.

It is an amenable number.

1660600481 is a deficient number, since it is larger than the sum of its proper divisors (1).

1660600481 is an equidigital number, since it uses as much as digits as its factorization.

1660600481 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 1660600481 is about 40750.4660218751. The cubic root of 1660600481 is about 1184.1909010975.

The spelling of 1660600481 in words is "one billion, six hundred sixty million, six hundred thousand, four hundred eighty-one".