662440651 has 2 divisors, whose sum is σ = 662440652. Its totient is φ = 662440650.

The previous prime is 662440631. The next prime is 662440661. The reversal of 662440651 is 156044266.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 662440651 - 2¹⁵ = 662407883 is a prime.

It is not a weakly prime, because it can be changed into another prime (662440631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 331220325 + 331220326.

It is an arithmetic number, because the mean of its divisors is an integer number (331220326).

Almost surely, 2^662440651 is an apocalyptic number.

662440651 is a deficient number, since it is larger than the sum of its proper divisors (1).

662440651 is an equidigital number, since it uses as much as digits as its factorization.

662440651 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34560, while the sum is 34.

The square root of 662440651 is about 25737.9224297533. The cubic root of 662440651 is about 871.7306682132.

The spelling of 662440651 in words is "six hundred sixty-two million, four hundred forty thousand, six hundred fifty-one".