662652261 has 6 divisors (see below), whose sum is σ = 957164390. Its totient is φ = 441768168.

The previous prime is 662652257. The next prime is 662652281. The reversal of 662652261 is 162256266.

662652261 is a `hidden beast` number, since 6 + 626 + 5 + 2 + 26 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 577440900 + 85211361 = 24030^2 + 9231^2 .

It is not a de Polignac number, because 662652261 - 2² = 662652257 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 (662652281) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 36814006 + ... + 36814023.

Almost surely, 2^662652261 is an apocalyptic number.

It is an amenable number.

662652261 is a deficient number, since it is larger than the sum of its proper divisors (294512129).

662652261 is a wasteful number, since it uses less digits than its factorization.

662652261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73628035 (or 73628032 counting only the distinct ones).

The product of its digits is 51840, while the sum is 36.

The square root of 662652261 is about 25742.0329616757. The cubic root of 662652261 is about 871.8234801946.

The spelling of 662652261 in words is "six hundred sixty-two million, six hundred fifty-two thousand, two hundred sixty-one".