63720567 has 8 divisors (see below), whose sum is σ = 94400880. Its totient is φ = 42480360.

The previous prime is 63720493. The next prime is 63720581. The reversal of 63720567 is 76502736.

It is a happy number.

It is not a de Polignac number, because 63720567 - 2⁸ = 63720311 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63720467) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1179984 + ... + 1180037.

It is an arithmetic number, because the mean of its divisors is an integer number (11800110).

Almost surely, 2^63720567 is an apocalyptic number.

63720567 is a deficient number, since it is larger than the sum of its proper divisors (30680313).

63720567 is a wasteful number, since it uses less digits than its factorization.

63720567 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2360030 (or 2360024 counting only the distinct ones).

The product of its (nonzero) digits is 52920, while the sum is 36.

The square root of 63720567 is about 7982.5163325859. The cubic root of 63720567 is about 399.4169986029.

The spelling of 63720567 in words is "sixty-three million, seven hundred twenty thousand, five hundred sixty-seven".