662037243661 has 4 divisors (see below), whose sum is σ = 664296756732. Its totient is φ = 659777730592.

The previous prime is 662037243653. The next prime is 662037243677. The reversal of 662037243661 is 166342730266.

It is a happy number.

662037243661 is digitally balanced in base 2, 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 630108914436 + 31928329225 = 793794^2 + 178685^2 .

It is a cyclic number.

It is not a de Polignac number, because 662037243661 - 2³ = 662037243653 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (662037243611) 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, 1129756096 + ... + 1129756681.

It is an arithmetic number, because the mean of its divisors is an integer number (166074189183).

Almost surely, 2^662037243661 is an apocalyptic number.

It is an amenable number.

662037243661 is a deficient number, since it is larger than the sum of its proper divisors (2259513071).

662037243661 is a wasteful number, since it uses less digits than its factorization.

662037243661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2259513070.

The product of its (nonzero) digits is 1306368, while the sum is 46.

The spelling of 662037243661 in words is "six hundred sixty-two billion, thirty-seven million, two hundred forty-three thousand, six hundred sixty-one".