65454444 has 72 divisors (see below), whose sum is σ = 183263808. Its totient is φ = 19530720.

The previous prime is 65454419. The next prime is 65454451. The reversal of 65454444 is 44445456.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 65454399 and 65454408.

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, 25299 + ... + 27765.

Almost surely, 2^65454444 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65454444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (91631904).

65454444 is an abundant number, since it is smaller than the sum of its proper divisors (117809364).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

65454444 is a wasteful number, since it uses less digits than its factorization.

65454444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2555 (or 2550 counting only the distinct ones).

The product of its digits is 153600, while the sum is 36.

The square root of 65454444 is about 8090.3920794978. The cubic root of 65454444 is about 403.0074235077.

The spelling of 65454444 in words is "sixty-five million, four hundred fifty-four thousand, four hundred forty-four".