65504477 has 2 divisors, whose sum is σ = 65504478. Its totient is φ = 65504476.

The previous prime is 65504407. The next prime is 65504497. The reversal of 65504477 is 77440556.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 44169316 + 21335161 = 6646^2 + 4619^2 .

It is a cyclic number.

It is not a de Polignac number, because 65504477 - 2¹⁰ = 65503453 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 65504477.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65504407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32752238 + 32752239.

It is an arithmetic number, because the mean of its divisors is an integer number (32752239).

Almost surely, 2^65504477 is an apocalyptic number.

It is an amenable number.

65504477 is a deficient number, since it is larger than the sum of its proper divisors (1).

65504477 is an equidigital number, since it uses as much as digits as its factorization.

65504477 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 117600, while the sum is 38.

The square root of 65504477 is about 8093.4836133769. The cubic root of 65504477 is about 403.1100828725.

The spelling of 65504477 in words is "sixty-five million, five hundred four thousand, four hundred seventy-seven".