1662706201 has 16 divisors (see below), whose sum is σ = 1805403600. Its totient is φ = 1522176768.

The previous prime is 1662706183. The next prime is 1662706229. The reversal of 1662706201 is 1026072661.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 24025 + 1662682176 = 155^2 + 40776^2 .

It is a cyclic number.

It is not a de Polignac number, because 1662706201 - 2¹⁵ = 1662673433 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1662706261) 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, 995395 + ... + 997063.

It is an arithmetic number, because the mean of its divisors is an integer number (112837725).

Almost surely, 2^1662706201 is an apocalyptic number.

It is an amenable number.

1662706201 is a deficient number, since it is larger than the sum of its proper divisors (142697399).

1662706201 is a wasteful number, since it uses less digits than its factorization.

1662706201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2268.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 1662706201 is about 40776.2945962480. The cubic root of 1662706201 is about 1184.6912263803.

Adding to 1662706201 its reverse (1026072661), we get a palindrome (2688778862).

The spelling of 1662706201 in words is "one billion, six hundred sixty-two million, seven hundred six thousand, two hundred one".