662606251 has 4 divisors (see below), whose sum is σ = 662682904. Its totient is φ = 662529600.

The previous prime is 662606227. The next prime is 662606261. The reversal of 662606251 is 152606266.

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

It is a cyclic number.

It is not a de Polignac number, because 662606251 - 2²⁹ = 125735339 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (662606201) 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, 23430 + ... + 43291.

It is an arithmetic number, because the mean of its divisors is an integer number (165670726).

Almost surely, 2^662606251 is an apocalyptic number.

662606251 is a deficient number, since it is larger than the sum of its proper divisors (76653).

662606251 is an equidigital number, since it uses as much as digits as its factorization.

662606251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76652.

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 662606251 is about 25741.1392716018. The cubic root of 662606251 is about 871.8033019256.

The spelling of 662606251 in words is "six hundred sixty-two million, six hundred six thousand, two hundred fifty-one".