662040460657 has 4 divisors (see below), whose sum is σ = 662151157236. Its totient is φ = 661929764080.

The previous prime is 662040460639. The next prime is 662040460693. The reversal of 662040460657 is 756064040266.

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 144095400801 + 517945059856 = 379599^2 + 719684^2 .

It is a cyclic number.

It is not a de Polignac number, because 662040460657 - 2¹⁵ = 662040427889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (662040461657) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55339318 + ... + 55351279.

It is an arithmetic number, because the mean of its divisors is an integer number (165537789309).

Almost surely, 2^662040460657 is an apocalyptic number.

It is an amenable number.

662040460657 is a deficient number, since it is larger than the sum of its proper divisors (110696579).

662040460657 is a wasteful number, since it uses less digits than its factorization.

662040460657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110696578.

The product of its (nonzero) digits is 1451520, while the sum is 46.

The spelling of 662040460657 in words is "six hundred sixty-two billion, forty million, four hundred sixty thousand, six hundred fifty-seven".