66463716 has 48 divisors (see below), whose sum is σ = 169985088. Its totient is φ = 20044800.

The previous prime is 66463711. The next prime is 66463717. The reversal of 66463716 is 61736466.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (66463711) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29676 + ... + 31836.

It is an arithmetic number, because the mean of its divisors is an integer number (3541356).

Almost surely, 2^66463716 is an apocalyptic number.

66463716 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66463716, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84992544).

66463716 is an abundant number, since it is smaller than the sum of its proper divisors (103521372).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66463716 is a wasteful number, since it uses less digits than its factorization.

66463716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2412 (or 2410 counting only the distinct ones).

The product of its digits is 108864, while the sum is 39.

The square root of 66463716 is about 8152.5281968234. The cubic root of 66463716 is about 405.0682524813.

The spelling of 66463716 in words is "sixty-six million, four hundred sixty-three thousand, seven hundred sixteen".