65516445 has 24 divisors (see below), whose sum is σ = 117770016. Its totient is φ = 34941456.

The previous prime is 65516431. The next prime is 65516459. The reversal of 65516445 is 54461556.

65516445 is a `hidden beast` number, since 6 + 5 + 5 + 1 + 644 + 5 = 666.

It is an interprime number because it is at equal distance from previous prime (65516431) and next prime (65516459).

It is not a de Polignac number, because 65516445 - 2⁵ = 65516413 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 25747 + ... + 28176.

It is an arithmetic number, because the mean of its divisors is an integer number (4907084).

Almost surely, 2^65516445 is an apocalyptic number.

It is an amenable number.

65516445 is a deficient number, since it is larger than the sum of its proper divisors (52253571).

65516445 is an equidigital number, since it uses as much as digits as its factorization.

65516445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53943 (or 53931 counting only the distinct ones).

The product of its digits is 72000, while the sum is 36.

The square root of 65516445 is about 8094.2229398504. Note that the first 3 decimals coincide. The cubic root of 65516445 is about 403.1346314627.

It can be divided in two parts, 6551 and 6445, that added together give a square (12996 = 114²).

The spelling of 65516445 in words is "sixty-five million, five hundred sixteen thousand, four hundred forty-five".