63520067 has 4 divisors (see below), whose sum is σ = 68406240. Its totient is φ = 58633896.

The previous prime is 63520031. The next prime is 63520069. The reversal of 63520067 is 76002536.

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 63520067 - 2¹⁸ = 63257923 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63520069) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2443067 + ... + 2443092.

It is an arithmetic number, because the mean of its divisors is an integer number (17101560).

Almost surely, 2^63520067 is an apocalyptic number.

63520067 is a deficient number, since it is larger than the sum of its proper divisors (4886173).

63520067 is a wasteful number, since it uses less digits than its factorization.

63520067 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4886172.

The product of its (nonzero) digits is 7560, while the sum is 29.

The square root of 63520067 is about 7969.9477413594. The cubic root of 63520067 is about 398.9976298166.

It can be divided in two parts, 635 and 20067, that added together give a palindrome (20702).

The spelling of 63520067 in words is "sixty-three million, five hundred twenty thousand, sixty-seven".