66060771 has 32 divisors (see below), whose sum is σ = 105177600. Its totient is φ = 36846432.

The previous prime is 66060763. The next prime is 66060791. The reversal of 66060771 is 17706066.

It is not a de Polignac number, because 66060771 - 2³ = 66060763 is a prime.

It is a super-2 number, since 2×66060771² = 8728050930228882, which contains 22 as substring.

It is a zygodrome in base 2.

It is not an unprimeable number, because it can be changed into a prime (66060791) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 43501 + ... + 44993.

It is an arithmetic number, because the mean of its divisors is an integer number (3286800).

Almost surely, 2^66060771 is an apocalyptic number.

66060771 is a deficient number, since it is larger than the sum of its proper divisors (39116829).

66060771 is a wasteful number, since it uses less digits than its factorization.

66060771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1560 (or 1546 counting only the distinct ones).

The product of its (nonzero) digits is 10584, while the sum is 33.

The square root of 66060771 is about 8127.7777405635. Note that the first 4 decimals coincide. The cubic root of 66060771 is about 404.2479994654.

The spelling of 66060771 in words is "sixty-six million, sixty thousand, seven hundred seventy-one".