65904497 has 2 divisors, whose sum is σ = 65904498. Its totient is φ = 65904496.

The previous prime is 65904467. The next prime is 65904533. The reversal of 65904497 is 79440956.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 46226401 + 19678096 = 6799^2 + 4436^2 .

It is a cyclic number.

It is not a de Polignac number, because 65904497 - 2¹⁰ = 65903473 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (65904467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32952248 + 32952249.

It is an arithmetic number, because the mean of its divisors is an integer number (32952249).

Almost surely, 2^65904497 is an apocalyptic number.

It is an amenable number.

65904497 is a deficient number, since it is larger than the sum of its proper divisors (1).

65904497 is an equidigital number, since it uses as much as digits as its factorization.

65904497 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 272160, while the sum is 44.

The square root of 65904497 is about 8118.1584734470. The cubic root of 65904497 is about 403.9289834490.

The spelling of 65904497 in words is "sixty-five million, nine hundred four thousand, four hundred ninety-seven".