1412640665 has 4 divisors (see below), whose sum is σ = 1695168804. Its totient is φ = 1130112528.

The previous prime is 1412640659. The next prime is 1412640673. The reversal of 1412640665 is 5660462141.

1412640665 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 786690304 + 625950361 = 28048^2 + 25019^2 .

It is a cyclic number.

It is not a de Polignac number, because 1412640665 - 2²⁶ = 1345531801 is a prime.

It is a Duffinian number.

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, 141264062 + ... + 141264071.

It is an arithmetic number, because the mean of its divisors is an integer number (423792201).

Almost surely, 2^1412640665 is an apocalyptic number.

It is an amenable number.

1412640665 is a deficient number, since it is larger than the sum of its proper divisors (282528139).

1412640665 is an equidigital number, since it uses as much as digits as its factorization.

1412640665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 282528138.

The product of its (nonzero) digits is 34560, while the sum is 35.

The square root of 1412640665 is about 37585.1122786669. The cubic root of 1412640665 is about 1122.0457574466.

The spelling of 1412640665 in words is "one billion, four hundred twelve million, six hundred forty thousand, six hundred sixty-five".