63660743 has 4 divisors (see below), whose sum is σ = 63687888. Its totient is φ = 63633600.

The previous prime is 63660739. The next prime is 63660761. The reversal of 63660743 is 34706636.

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 63660743 - 2² = 63660739 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 (63660643) 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, 9683 + ... + 14868.

It is an arithmetic number, because the mean of its divisors is an integer number (15921972).

Almost surely, 2^63660743 is an apocalyptic number.

63660743 is a deficient number, since it is larger than the sum of its proper divisors (27145).

63660743 is a wasteful number, since it uses less digits than its factorization.

63660743 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27144.

The product of its (nonzero) digits is 54432, while the sum is 35.

The square root of 63660743 is about 7978.7682633349. The cubic root of 63660743 is about 399.2919620284.

The spelling of 63660743 in words is "sixty-three million, six hundred sixty thousand, seven hundred forty-three".