66461351 has 8 divisors (see below), whose sum is σ = 72576000. Its totient is φ = 60358840.

The previous prime is 66461341. The next prime is 66461371. The reversal of 66461351 is 15316466.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66461351 is a prime.

It is a super-2 number, since 2×66461351² = 8834222353490402, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66461341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11450 + ... + 16248.

It is an arithmetic number, because the mean of its divisors is an integer number (9072000).

Almost surely, 2^66461351 is an apocalyptic number.

66461351 is a deficient number, since it is larger than the sum of its proper divisors (6114649).

66461351 is a wasteful number, since it uses less digits than its factorization.

66461351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6069.

The product of its digits is 12960, while the sum is 32.

The square root of 66461351 is about 8152.3831485033. The cubic root of 66461351 is about 405.0634478659.

It can be divided in two parts, 6646 and 1351, that added together give a palindrome (7997).

The spelling of 66461351 in words is "sixty-six million, four hundred sixty-one thousand, three hundred fifty-one".