63977271 has 4 divisors (see below), whose sum is σ = 85303032. Its totient is φ = 42651512.

The previous prime is 63977269. The next prime is 63977279. The reversal of 63977271 is 17277936.

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 63977271 - 2¹ = 63977269 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63977279) 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, 10662876 + ... + 10662881.

It is an arithmetic number, because the mean of its divisors is an integer number (21325758).

Almost surely, 2^63977271 is an apocalyptic number.

63977271 is a deficient number, since it is larger than the sum of its proper divisors (21325761).

63977271 is a wasteful number, since it uses less digits than its factorization.

63977271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21325760.

The product of its digits is 111132, while the sum is 42.

The square root of 63977271 is about 7998.5793113527. The cubic root of 63977271 is about 399.9526423100.

The spelling of 63977271 in words is "sixty-three million, nine hundred seventy-seven thousand, two hundred seventy-one".