63731361 has 8 divisors (see below), whose sum is σ = 85587040. Its totient is φ = 42181632.

The previous prime is 63731359. The next prime is 63731363. The reversal of 63731361 is 16313736.

It is an interprime number because it is at equal distance from previous prime (63731359) and next prime (63731363).

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

It is not a de Polignac number, because 63731361 - 2¹ = 63731359 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (63731363) 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, 76000 + ... + 76833.

It is an arithmetic number, because the mean of its divisors is an integer number (10698380).

Almost surely, 2^63731361 is an apocalyptic number.

It is an amenable number.

63731361 is a deficient number, since it is larger than the sum of its proper divisors (21855679).

63731361 is a wasteful number, since it uses less digits than its factorization.

63731361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152975.

The product of its digits is 6804, while the sum is 30.

The square root of 63731361 is about 7983.1924065502. The cubic root of 63731361 is about 399.4395505244.

The spelling of 63731361 in words is "sixty-three million, seven hundred thirty-one thousand, three hundred sixty-one".