66461011 has 8 divisors (see below), whose sum is σ = 68983200. Its totient is φ = 63954240.

The previous prime is 66461009. The next prime is 66461051. The reversal of 66461011 is 11016466.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 66461011 - 2¹ = 66461009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66461051) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5335 + ... + 12703.

It is an arithmetic number, because the mean of its divisors is an integer number (8622900).

Almost surely, 2^66461011 is an apocalyptic number.

66461011 is a deficient number, since it is larger than the sum of its proper divisors (2522189).

66461011 is a wasteful number, since it uses less digits than its factorization.

66461011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7709.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 66461011 is about 8152.3622956785. The cubic root of 66461011 is about 405.0627571296.

Adding to 66461011 its reverse (11016466), we get a palindrome (77477477).

The spelling of 66461011 in words is "sixty-six million, four hundred sixty-one thousand, eleven".