66262560 has 384 divisors, whose sum is σ = 270273024. Its totient is φ = 13271040.

The previous prime is 66262541. The next prime is 66262571. The reversal of 66262560 is 6526266.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1616140 + ... + 1616180.

It is an arithmetic number, because the mean of its divisors is an integer number (703836).

Almost surely, 2^66262560 is an apocalyptic number.

66262560 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 66262560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (135136512).

66262560 is an abundant number, since it is smaller than the sum of its proper divisors (204010464).

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

66262560 is a wasteful number, since it uses less digits than its factorization.

66262560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116 (or 108 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 33.

The square root of 66262560 is about 8140.1818161513. The cubic root of 66262560 is about 404.6591859212.

The spelling of 66262560 in words is "sixty-six million, two hundred sixty-two thousand, five hundred sixty".