65449091 has 8 divisors (see below), whose sum is σ = 71116800. Its totient is φ = 60003720.

The previous prime is 65449073. The next prime is 65449121. The reversal of 65449091 is 19094456.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 65449091 - 2¹⁰ = 65448067 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65440091) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54971 + ... + 56148.

It is an arithmetic number, because the mean of its divisors is an integer number (8889600).

Almost surely, 2^65449091 is an apocalyptic number.

65449091 is a deficient number, since it is larger than the sum of its proper divisors (5667709).

65449091 is a wasteful number, since it uses less digits than its factorization.

65449091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111169.

The product of its (nonzero) digits is 38880, while the sum is 38.

The square root of 65449091 is about 8090.0612482230. The cubic root of 65449091 is about 402.9964369476.

The spelling of 65449091 in words is "sixty-five million, four hundred forty-nine thousand, ninety-one".