65620960 has 48 divisors (see below), whose sum is σ = 156519216. Its totient is φ = 25996288.

The previous prime is 65620931. The next prime is 65620979. The reversal of 65620960 is 6902656.

It is a super-2 number, since 2×65620960² = 8612220782643200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15204 + ... + 19036.

It is an arithmetic number, because the mean of its divisors is an integer number (3260817).

Almost surely, 2^65620960 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 65620960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78259608).

65620960 is an abundant number, since it is smaller than the sum of its proper divisors (90898256).

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

65620960 is a wasteful number, since it uses less digits than its factorization.

65620960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3955 (or 3947 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 34.

The square root of 65620960 is about 8100.6765149585. The cubic root of 65620960 is about 403.3488841912.

The spelling of 65620960 in words is "sixty-five million, six hundred twenty thousand, nine hundred sixty".