65197449 has 6 divisors (see below), whose sum is σ = 94174106. Its totient is φ = 43464960.

The previous prime is 65197427. The next prime is 65197459. The reversal of 65197449 is 94479156.

It can be written as a sum of positive squares in only one way, i.e., 58982400 + 6215049 = 7680^2 + 2493^2 .

It is not a de Polignac number, because 65197449 - 2¹² = 65193353 is a prime.

It is a super-2 number, since 2×65197449² = 8501414712215202, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65197409) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3622072 + ... + 3622089.

Almost surely, 2^65197449 is an apocalyptic number.

It is an amenable number.

65197449 is a deficient number, since it is larger than the sum of its proper divisors (28976657).

65197449 is a wasteful number, since it uses less digits than its factorization.

65197449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7244167 (or 7244164 counting only the distinct ones).

The product of its digits is 272160, while the sum is 45.

The square root of 65197449 is about 8074.4937302595. The cubic root of 65197449 is about 402.4792865130.

The spelling of 65197449 in words is "sixty-five million, one hundred ninety-seven thousand, four hundred forty-nine".