65676440 has 64 divisors (see below), whose sum is σ = 159213600. Its totient is φ = 24291328.

The previous prime is 65676433. The next prime is 65676461. The reversal of 65676440 is 4467656.

It is a junction number, because it is equal to n+sod(n) for n = 65676394 and 65676403.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39302 + ... + 40938.

Almost surely, 2^65676440 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 65676440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79606800).

65676440 is an abundant number, since it is smaller than the sum of its proper divisors (93537160).

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

65676440 is a wasteful number, since it uses less digits than its factorization.

65676440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1724 (or 1720 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 38.

The square root of 65676440 is about 8104.1001968140. The cubic root of 65676440 is about 403.4625241651.

The spelling of 65676440 in words is "sixty-five million, six hundred seventy-six thousand, four hundred forty".