63709942 has 4 divisors (see below), whose sum is σ = 95564916. Its totient is φ = 31854970.

The previous prime is 63709939. The next prime is 63709949. The reversal of 63709942 is 24990736.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 63709895 and 63709904.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63709949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15927484 + ... + 15927487.

It is an arithmetic number, because the mean of its divisors is an integer number (23891229).

Almost surely, 2^63709942 is an apocalyptic number.

63709942 is a deficient number, since it is larger than the sum of its proper divisors (31854974).

63709942 is a wasteful number, since it uses less digits than its factorization.

63709942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31854973.

The product of its (nonzero) digits is 81648, while the sum is 40.

The square root of 63709942 is about 7981.8507878812. The cubic root of 63709942 is about 399.3947972860.

The spelling of 63709942 in words is "sixty-three million, seven hundred nine thousand, nine hundred forty-two".