63996742 has 4 divisors (see below), whose sum is σ = 95995116. Its totient is φ = 31998370.

The previous prime is 63996733. The next prime is 63996743. The reversal of 63996742 is 24769936.

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

It is a super-2 number, since 2×63996742² = 8191165973229128, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 63996692 and 63996701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63996743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15999184 + ... + 15999187.

It is an arithmetic number, because the mean of its divisors is an integer number (23998779).

Almost surely, 2^63996742 is an apocalyptic number.

63996742 is a deficient number, since it is larger than the sum of its proper divisors (31998374).

63996742 is a wasteful number, since it uses less digits than its factorization.

63996742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31998373.

The product of its digits is 489888, while the sum is 46.

The square root of 63996742 is about 7999.7963724085. The cubic root of 63996742 is about 399.9932123848.

The spelling of 63996742 in words is "sixty-three million, nine hundred ninety-six thousand, seven hundred forty-two".