662666051 has 2 divisors, whose sum is σ = 662666052. Its totient is φ = 662666050.

The previous prime is 662666047. The next prime is 662666057. The reversal of 662666051 is 150666266.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 662666051 - 2² = 662666047 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 662665996 and 662666014.

It is not a weakly prime, because it can be changed into another prime (662666057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 331333025 + 331333026.

It is an arithmetic number, because the mean of its divisors is an integer number (331333026).

Almost surely, 2^662666051 is an apocalyptic number.

662666051 is a deficient number, since it is larger than the sum of its proper divisors (1).

662666051 is an equidigital number, since it uses as much as digits as its factorization.

662666051 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 77760, while the sum is 38.

The square root of 662666051 is about 25742.3008101452. The cubic root of 662666051 is about 871.8295277921.

The spelling of 662666051 in words is "six hundred sixty-two million, six hundred sixty-six thousand, fifty-one".