63561907 has 8 divisors (see below), whose sum is σ = 65123136. Its totient is φ = 62009472.

The previous prime is 63561887. The next prime is 63561923. The reversal of 63561907 is 70916536.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 63561907 - 2²³ = 55173299 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63561937) 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, 13833 + ... + 17845.

It is an arithmetic number, because the mean of its divisors is an integer number (8140392).

Almost surely, 2^63561907 is an apocalyptic number.

63561907 is a deficient number, since it is larger than the sum of its proper divisors (1561229).

63561907 is a wasteful number, since it uses less digits than its factorization.

63561907 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4397.

The product of its (nonzero) digits is 34020, while the sum is 37.

The square root of 63561907 is about 7972.5721696326. The cubic root of 63561907 is about 399.0852157694.

The spelling of 63561907 in words is "sixty-three million, five hundred sixty-one thousand, nine hundred seven".