66463743 has 8 divisors (see below), whose sum is σ = 89108656. Its totient is φ = 44064000.

The previous prime is 66463723. The next prime is 66463763. The reversal of 66463743 is 34736466.

It is an interprime number because it is at equal distance from previous prime (66463723) and next prime (66463763).

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

It is not a de Polignac number, because 66463743 - 2⁵ = 66463711 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66463723) 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, 60658 + ... + 61743.

It is an arithmetic number, because the mean of its divisors is an integer number (11138582).

Almost surely, 2^66463743 is an apocalyptic number.

66463743 is a deficient number, since it is larger than the sum of its proper divisors (22644913).

66463743 is a wasteful number, since it uses less digits than its factorization.

66463743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122585.

The product of its digits is 217728, while the sum is 39.

The square root of 66463743 is about 8152.5298527512. The cubic root of 66463743 is about 405.0683073325.

The spelling of 66463743 in words is "sixty-six million, four hundred sixty-three thousand, seven hundred forty-three".