66063451 has 4 divisors (see below), whose sum is σ = 66326904. Its totient is φ = 65800000.

The previous prime is 66063443. The next prime is 66063457. The reversal of 66063451 is 15436066.

66063451 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 66063451 - 2³ = 66063443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66063457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 131350 + ... + 131851.

It is an arithmetic number, because the mean of its divisors is an integer number (16581726).

Almost surely, 2^66063451 is an apocalyptic number.

66063451 is a deficient number, since it is larger than the sum of its proper divisors (263453).

66063451 is a wasteful number, since it uses less digits than its factorization.

66063451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 263452.

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 66063451 is about 8127.9426056044. The cubic root of 66063451 is about 404.2534659975.

The spelling of 66063451 in words is "sixty-six million, sixty-three thousand, four hundred fifty-one".