63740865 has 8 divisors (see below), whose sum is σ = 101985408. Its totient is φ = 33995120.

The previous prime is 63740861. The next prime is 63740881. The reversal of 63740865 is 56804736.

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

It is not a de Polignac number, because 63740865 - 2² = 63740861 is a prime.

It is not an unprimeable number, because it can be changed into a prime (63740861) 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, 2124681 + ... + 2124710.

It is an arithmetic number, because the mean of its divisors is an integer number (12748176).

Almost surely, 2^63740865 is an apocalyptic number.

It is an amenable number.

63740865 is a deficient number, since it is larger than the sum of its proper divisors (38244543).

63740865 is a wasteful number, since it uses less digits than its factorization.

63740865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4249399.

The product of its (nonzero) digits is 120960, while the sum is 39.

The square root of 63740865 is about 7983.7876349512. The cubic root of 63740865 is about 399.4594051388.

The spelling of 63740865 in words is "sixty-three million, seven hundred forty thousand, eight hundred sixty-five".