662920600649 has 2 divisors, whose sum is σ = 662920600650. Its totient is φ = 662920600648.

The previous prime is 662920600619. The next prime is 662920600669. The reversal of 662920600649 is 946006029266.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 515516820025 + 147403780624 = 717995^2 + 383932^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-662920600649 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 662920600597 and 662920600606.

It is not a weakly prime, because it can be changed into another prime (662920600609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 331460300324 + 331460300325.

It is an arithmetic number, because the mean of its divisors is an integer number (331460300325).

Almost surely, 2^662920600649 is an apocalyptic number.

It is an amenable number.

662920600649 is a deficient number, since it is larger than the sum of its proper divisors (1).

662920600649 is an equidigital number, since it uses as much as digits as its factorization.

662920600649 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1679616, while the sum is 50.

The spelling of 662920600649 in words is "six hundred sixty-two billion, nine hundred twenty million, six hundred thousand, six hundred forty-nine".