65496649 has 3 divisors (see below), whose sum is σ = 65504743. Its totient is φ = 65488556.

The previous prime is 65496647. The next prime is 65496653. The reversal of 65496649 is 94669456.

The square root of 65496649 is 8093.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 28676025 + 36820624 = 5355^2 + 6068^2 .

It is not a de Polignac number, because 65496649 - 2¹ = 65496647 is a prime.

It is a super-2 number, since 2×65496649² = 8579622060458402, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65496647) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 4047 + ... + 12139.

Almost surely, 2^65496649 is an apocalyptic number.

65496649 is the 8093-rd square number.

65496649 is the 4047-th centered octagonal number.

It is an amenable number.

65496649 is a deficient number, since it is larger than the sum of its proper divisors (8094).

65496649 is an frugal number, since it uses more digits than its factorization.

65496649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16186 (or 8093 counting only the distinct ones).

The product of its digits is 1399680, while the sum is 49.

The cubic root of 65496649 is about 403.0940245735.

Multiplying 65496649 by its sum of digits (49), we get a square (3209335801 = 56651²).

The spelling of 65496649 in words is "sixty-five million, four hundred ninety-six thousand, six hundred forty-nine".