63738961 has 16 divisors (see below), whose sum is σ = 76120128. Its totient is φ = 52603200.

The previous prime is 63738959. The next prime is 63738971. The reversal of 63738961 is 16983736.

It is not a de Polignac number, because 63738961 - 2¹ = 63738959 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63738971) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5070 + ... + 12376.

It is an arithmetic number, because the mean of its divisors is an integer number (4757508).

Almost surely, 2^63738961 is an apocalyptic number.

63738961 is a gapful number since it is divisible by the number (61) formed by its first and last digit.

It is an amenable number.

63738961 is a deficient number, since it is larger than the sum of its proper divisors (12381167).

63738961 is a wasteful number, since it uses less digits than its factorization.

63738961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7392.

The product of its digits is 163296, while the sum is 43.

The square root of 63738961 is about 7983.6683924121. The cubic root of 63738961 is about 399.4554276889.

The spelling of 63738961 in words is "sixty-three million, seven hundred thirty-eight thousand, nine hundred sixty-one".