65506757 has 2 divisors, whose sum is σ = 65506758. Its totient is φ = 65506756.

The previous prime is 65506747. The next prime is 65506787. The reversal of 65506757 is 75760556.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 63984001 + 1522756 = 7999^2 + 1234^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65506757 is a prime.

It is a super-2 number, since 2×65506757² = 8582270425314098, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65506747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32753378 + 32753379.

It is an arithmetic number, because the mean of its divisors is an integer number (32753379).

Almost surely, 2^65506757 is an apocalyptic number.

It is an amenable number.

65506757 is a deficient number, since it is larger than the sum of its proper divisors (1).

65506757 is an equidigital number, since it uses as much as digits as its factorization.

65506757 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 220500, while the sum is 41.

The square root of 65506757 is about 8093.6244662080. The cubic root of 65506757 is about 403.1147598064.

The spelling of 65506757 in words is "sixty-five million, five hundred six thousand, seven hundred fifty-seven".