65002661 has 2 divisors, whose sum is σ = 65002662. Its totient is φ = 65002660.

The previous prime is 65002621. The next prime is 65002687. The reversal of 65002661 is 16620056.

It is an a-pointer prime, because the next prime (65002687) can be obtained adding 65002661 to its sum of digits (26).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 33988900 + 31013761 = 5830^2 + 5569^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65002661 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 65002661.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65002621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32501330 + 32501331.

It is an arithmetic number, because the mean of its divisors is an integer number (32501331).

Almost surely, 2^65002661 is an apocalyptic number.

It is an amenable number.

65002661 is a deficient number, since it is larger than the sum of its proper divisors (1).

65002661 is an equidigital number, since it uses as much as digits as its factorization.

65002661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 65002661 is about 8062.4227748240. The cubic root of 65002661 is about 402.0780625283.

The spelling of 65002661 in words is "sixty-five million, two thousand, six hundred sixty-one".