1662345266 has 8 divisors (see below), whose sum is σ = 2516394540. Its totient is φ = 823547088.

The previous prime is 1662345253. The next prime is 1662345281. The reversal of 1662345266 is 6625432661.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1534994041 + 127351225 = 39179^2 + 11285^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×1662345266² = 5526783566785221512, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3812501 + ... + 3812936.

Almost surely, 2^1662345266 is an apocalyptic number.

1662345266 is a deficient number, since it is larger than the sum of its proper divisors (854049274).

1662345266 is a wasteful number, since it uses less digits than its factorization.

1662345266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7625548.

The product of its digits is 311040, while the sum is 41.

The square root of 1662345266 is about 40771.8685615462. The cubic root of 1662345266 is about 1184.6054971694.

It can be divided in two parts, 166 and 2345266, that added together give a palindrome (2345432).

The spelling of 1662345266 in words is "one billion, six hundred sixty-two million, three hundred forty-five thousand, two hundred sixty-six".