66461123 has 8 divisors (see below), whose sum is σ = 68215056. Its totient is φ = 64713600.

The previous prime is 66461113. The next prime is 66461137. The reversal of 66461123 is 32116466.

It is a happy number.

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 66461123 - 2¹⁴ = 66444739 is a prime.

It is a super-2 number, since 2×66461123² = 8834161740842258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66461113) 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, 25103 + ... + 27623.

It is an arithmetic number, because the mean of its divisors is an integer number (8526882).

Almost surely, 2^66461123 is an apocalyptic number.

66461123 is a deficient number, since it is larger than the sum of its proper divisors (1753933).

66461123 is a wasteful number, since it uses less digits than its factorization.

66461123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3205.

The product of its digits is 5184, while the sum is 29.

The square root of 66461123 is about 8152.3691648502. The cubic root of 66461123 is about 405.0629846665.

Adding to 66461123 its reverse (32116466), we get a palindrome (98577589).

The spelling of 66461123 in words is "sixty-six million, four hundred sixty-one thousand, one hundred twenty-three".