63509946 has 16 divisors (see below), whose sum is σ = 132542784. Its totient is φ = 20249504.

The previous prime is 63509921. The next prime is 63509947. The reversal of 63509946 is 64990536.

It is a junction number, because it is equal to n+sod(n) for n = 63509898 and 63509907.

It is not an unprimeable number, because it can be changed into a prime (63509947) 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, 229971 + ... + 230246.

It is an arithmetic number, because the mean of its divisors is an integer number (8283924).

Almost surely, 2^63509946 is an apocalyptic number.

63509946 is an abundant number, since it is smaller than the sum of its proper divisors (69032838).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

63509946 is a wasteful number, since it uses less digits than its factorization.

63509946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 460245.

The product of its (nonzero) digits is 174960, while the sum is 42.

The square root of 63509946 is about 7969.3127683634. The cubic root of 63509946 is about 398.9764371987.

The spelling of 63509946 in words is "sixty-three million, five hundred nine thousand, nine hundred forty-six".