662664451 has 2 divisors, whose sum is σ = 662664452. Its totient is φ = 662664450.

The previous prime is 662664439. The next prime is 662664461. The reversal of 662664451 is 154466266.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 662664451 - 2⁵ = 662664419 is a prime.

It is not a weakly prime, because it can be changed into another prime (662664461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 331332225 + 331332226.

It is an arithmetic number, because the mean of its divisors is an integer number (331332226).

Almost surely, 2^662664451 is an apocalyptic number.

662664451 is a deficient number, since it is larger than the sum of its proper divisors (1).

662664451 is an equidigital number, since it uses as much as digits as its factorization.

662664451 is an evil number, because the sum of its binary digits is even.

The product of its digits is 207360, while the sum is 40.

The square root of 662664451 is about 25742.2697328732. The cubic root of 662664451 is about 871.8288261172.

The spelling of 662664451 in words is "six hundred sixty-two million, six hundred sixty-four thousand, four hundred fifty-one".