65448621 has 32 divisors (see below), whose sum is σ = 114643200. Its totient is φ = 36106560.

The previous prime is 65448619. The next prime is 65448629. The reversal of 65448621 is 12684456.

It is not a de Polignac number, because 65448621 - 2¹ = 65448619 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65448629) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 490 + ... + 11451.

It is an arithmetic number, because the mean of its divisors is an integer number (3582600).

Almost surely, 2^65448621 is an apocalyptic number.

It is an amenable number.

65448621 is a deficient number, since it is larger than the sum of its proper divisors (49194579).

65448621 is a wasteful number, since it uses less digits than its factorization.

65448621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11986 (or 11980 counting only the distinct ones).

The product of its digits is 46080, while the sum is 36.

The square root of 65448621 is about 8090.0322001831. The cubic root of 65448621 is about 402.9954722854.

The spelling of 65448621 in words is "sixty-five million, four hundred forty-eight thousand, six hundred twenty-one".