63977607 has 10 divisors (see below), whose sum is σ = 95571608. Its totient is φ = 42651684.

The previous prime is 63977539. The next prime is 63977609. The reversal of 63977607 is 70677936.

63977607 is a `hidden beast` number, since 6 + 39 + 7 + 7 + 607 = 666.

It is not a de Polignac number, because 63977607 - 2¹¹ = 63975559 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 (63977609) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 394843 + ... + 395004.

Almost surely, 2^63977607 is an apocalyptic number.

63977607 is a deficient number, since it is larger than the sum of its proper divisors (31594001).

63977607 is an equidigital number, since it uses as much as digits as its factorization.

63977607 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 789859 (or 789850 counting only the distinct ones).

The product of its (nonzero) digits is 333396, while the sum is 45.

The square root of 63977607 is about 7998.6003150551. The cubic root of 63977607 is about 399.9533424746.

The spelling of 63977607 in words is "sixty-three million, nine hundred seventy-seven thousand, six hundred seven".