63980783 has 4 divisors (see below), whose sum is σ = 63998328. Its totient is φ = 63963240.

The previous prime is 63980759. The next prime is 63980803. The reversal of 63980783 is 38708936.

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 63980783 - 2¹⁴ = 63964399 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 (63980723) 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, 1016 + ... + 11357.

It is an arithmetic number, because the mean of its divisors is an integer number (15999582).

Almost surely, 2^63980783 is an apocalyptic number.

63980783 is a deficient number, since it is larger than the sum of its proper divisors (17545).

63980783 is a wasteful number, since it uses less digits than its factorization.

63980783 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17544.

The product of its (nonzero) digits is 217728, while the sum is 44.

The square root of 63980783 is about 7998.7988473270. The cubic root of 63980783 is about 399.9599605756.

The spelling of 63980783 in words is "sixty-three million, nine hundred eighty thousand, seven hundred eighty-three".