63740665 has 8 divisors (see below), whose sum is σ = 77091840. Its totient is φ = 50590512.

The previous prime is 63740657. The next prime is 63740671. The reversal of 63740665 is 56604736.

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

It is a cyclic number.

It is not a de Polignac number, because 63740665 - 2³ = 63740657 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49555 + ... + 50824.

It is an arithmetic number, because the mean of its divisors is an integer number (9636480).

Almost surely, 2^63740665 is an apocalyptic number.

It is an amenable number.

63740665 is a deficient number, since it is larger than the sum of its proper divisors (13351175).

63740665 is a wasteful number, since it uses less digits than its factorization.

63740665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100511.

The product of its (nonzero) digits is 90720, while the sum is 37.

The square root of 63740665 is about 7983.7751095581. The cubic root of 63740665 is about 399.4589873432.

The spelling of 63740665 in words is "sixty-three million, seven hundred forty thousand, six hundred sixty-five".