65126497 has 4 divisors (see below), whose sum is σ = 65147796. Its totient is φ = 65105200.

The previous prime is 65126447. The next prime is 65126521. The reversal of 65126497 is 79462156.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 11015761 + 54110736 = 3319^2 + 7356^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65126497 is a prime.

It is a super-2 number, since 2×65126497² = 8482921222982018, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65126407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5098 + ... + 12499.

It is an arithmetic number, because the mean of its divisors is an integer number (16286949).

Almost surely, 2^65126497 is an apocalyptic number.

It is an amenable number.

65126497 is a deficient number, since it is larger than the sum of its proper divisors (21299).

65126497 is a wasteful number, since it uses less digits than its factorization.

65126497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21298.

The product of its digits is 90720, while the sum is 40.

The square root of 65126497 is about 8070.0989461096. The cubic root of 65126497 is about 402.3332323543. Note that the first 3 decimals are identical.

The spelling of 65126497 in words is "sixty-five million, one hundred twenty-six thousand, four hundred ninety-seven".