63750061 has 4 divisors (see below), whose sum is σ = 63967932. Its totient is φ = 63532192.

The previous prime is 63750047. The next prime is 63750101. The reversal of 63750061 is 16005736.

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

It can be written as a sum of positive squares in 2 ways, for example, as 44222500 + 19527561 = 6650^2 + 4419^2 .

It is a cyclic number.

It is not a de Polignac number, because 63750061 - 2⁹ = 63749549 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 (63750761) 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, 108496 + ... + 109081.

It is an arithmetic number, because the mean of its divisors is an integer number (15991983).

Almost surely, 2^63750061 is an apocalyptic number.

It is an amenable number.

63750061 is a deficient number, since it is larger than the sum of its proper divisors (217871).

63750061 is a wasteful number, since it uses less digits than its factorization.

63750061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217870.

The product of its (nonzero) digits is 3780, while the sum is 28.

The square root of 63750061 is about 7984.3635313029. The cubic root of 63750061 is about 399.4786144380.

Adding to 63750061 its reverse (16005736), we get a palindrome (79755797).

The spelling of 63750061 in words is "sixty-three million, seven hundred fifty thousand, sixty-one".