65402616 has 64 divisors (see below), whose sum is σ = 172339200. Its totient is φ = 20642688.

The previous prime is 65402611. The next prime is 65402633. The reversal of 65402616 is 61620456.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65402611) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 59625 + ... + 60711.

It is an arithmetic number, because the mean of its divisors is an integer number (2692800).

Almost surely, 2^65402616 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 65402616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86169600).

65402616 is an abundant number, since it is smaller than the sum of its proper divisors (106936584).

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

65402616 is a wasteful number, since it uses less digits than its factorization.

65402616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1228 (or 1224 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 65402616 is about 8087.1883865779. The cubic root of 65402616 is about 402.9010259238.

The spelling of 65402616 in words is "sixty-five million, four hundred two thousand, six hundred sixteen".