1662820068 has 72 divisors (see below), whose sum is σ = 4801556928. Its totient is φ = 438542208.

The previous prime is 1662820057. The next prime is 1662820079. The reversal of 1662820068 is 8600282661.

1662820068 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (1662820057) and next prime (1662820079).

It is a Harshad number since it is a multiple of its sum of digits (39).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 44371 + ... + 72762.

Almost surely, 2^1662820068 is an apocalyptic number.

It is an amenable number.

1662820068 is an abundant number, since it is smaller than the sum of its proper divisors (3138736860).

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

1662820068 is a wasteful number, since it uses less digits than its factorization.

1662820068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117173 (or 117158 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 39.

The square root of 1662820068 is about 40777.6908125019. The cubic root of 1662820068 is about 1184.7182694736.

The spelling of 1662820068 in words is "one billion, six hundred sixty-two million, eight hundred twenty thousand, sixty-eight".