1335666690 has 24 divisors (see below), whose sum is σ = 3472733628. Its totient is φ = 356177760.

The previous prime is 1335666671. The next prime is 1335666691. The reversal of 1335666690 is 966665331.

It can be written as a sum of positive squares in 2 ways, for example, as 1323577161 + 12089529 = 36381^2 + 3477^2 .

It is a super-2 number, since 2×1335666690² = 3568011013551112200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1335666691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7420281 + ... + 7420460.

Almost surely, 2^1335666690 is an apocalyptic number.

1335666690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1335666690 is an abundant number, since it is smaller than the sum of its proper divisors (2137066938).

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

1335666690 is a wasteful number, since it uses less digits than its factorization.

1335666690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14840754 (or 14840751 counting only the distinct ones).

The product of its (nonzero) digits is 524880, while the sum is 45.

The square root of 1335666690 is about 36546.7740026394. The cubic root of 1335666690 is about 1101.2840899602.

The spelling of 1335666690 in words is "one billion, three hundred thirty-five million, six hundred sixty-six thousand, six hundred ninety".