65920560 has 160 divisors (see below), whose sum is σ = 219843072. Its totient is φ = 16281600.

The previous prime is 65920559. The next prime is 65920583. The reversal of 65920560 is 6502956.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 436485 + ... + 436635.

Almost surely, 2^65920560 is an apocalyptic number.

65920560 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65920560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (109921536).

65920560 is an abundant number, since it is smaller than the sum of its proper divisors (153922512).

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

65920560 is a wasteful number, since it uses less digits than its factorization.

65920560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291 (or 285 counting only the distinct ones).

The product of its (nonzero) digits is 16200, while the sum is 33.

The square root of 65920560 is about 8119.1477385253. The cubic root of 65920560 is about 403.9617975183.

The spelling of 65920560 in words is "sixty-five million, nine hundred twenty thousand, five hundred sixty".