66463404 has 144 divisors (see below), whose sum is σ = 195924960. Its totient is φ = 17418240.

The previous prime is 66463393. The next prime is 66463429. The reversal of 66463404 is 40436466.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 609702 + ... + 609810.

It is an arithmetic number, because the mean of its divisors is an integer number (1360590).

Almost surely, 2^66463404 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66463404, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97962480).

66463404 is an abundant number, since it is smaller than the sum of its proper divisors (129461556).

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

66463404 is a wasteful number, since it uses less digits than its factorization.

66463404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208 (or 199 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 33.

The square root of 66463404 is about 8152.5090616325. The cubic root of 66463404 is about 405.0676186443.

The spelling of 66463404 in words is "sixty-six million, four hundred sixty-three thousand, four hundred four".