66494411 has 8 divisors (see below), whose sum is σ = 69608448. Its totient is φ = 63441000.

The previous prime is 66494399. The next prime is 66494423. The reversal of 66494411 is 11449466.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (66494399) and next prime (66494423).

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 66494411 - 2⁶ = 66494347 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66494111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12905 + ... + 17306.

It is an arithmetic number, because the mean of its divisors is an integer number (8701056).

Almost surely, 2^66494411 is an apocalyptic number.

66494411 is a deficient number, since it is larger than the sum of its proper divisors (3114037).

66494411 is a wasteful number, since it uses less digits than its factorization.

66494411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30313.

The product of its digits is 20736, while the sum is 35.

The square root of 66494411 is about 8154.4105243727. The cubic root of 66494411 is about 405.1306005672.

The spelling of 66494411 in words is "sixty-six million, four hundred ninety-four thousand, four hundred eleven".