66460775 has 12 divisors (see below), whose sum is σ = 82517784. Its totient is φ = 53100000.

The previous prime is 66460763. The next prime is 66460783. The reversal of 66460775 is 57706466.

It is not a de Polignac number, because 66460775 - 2⁴ = 66460759 is a prime.

It is a super-2 number, since 2×66460775² = 8834069227201250, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28400 + ... + 30650.

It is an arithmetic number, because the mean of its divisors is an integer number (6876482).

Almost surely, 2^66460775 is an apocalyptic number.

66460775 is a deficient number, since it is larger than the sum of its proper divisors (16057009).

66460775 is a wasteful number, since it uses less digits than its factorization.

66460775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3442 (or 3437 counting only the distinct ones).

The product of its (nonzero) digits is 211680, while the sum is 41.

The square root of 66460775 is about 8152.3478213334. The cubic root of 66460775 is about 405.0622776759.

The spelling of 66460775 in words is "sixty-six million, four hundred sixty thousand, seven hundred seventy-five".