63434765 has 4 divisors (see below), whose sum is σ = 76121724. Its totient is φ = 50747808.

The previous prime is 63434753. The next prime is 63434779. The reversal of 63434765 is 56743436.

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

It can be written as a sum of positive squares in 2 ways, for example, as 18088009 + 45346756 = 4253^2 + 6734^2 .

It is a cyclic number.

It is not a de Polignac number, because 63434765 - 2¹⁸ = 63172621 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6343472 + ... + 6343481.

It is an arithmetic number, because the mean of its divisors is an integer number (19030431).

Almost surely, 2^63434765 is an apocalyptic number.

It is an amenable number.

63434765 is a deficient number, since it is larger than the sum of its proper divisors (12686959).

63434765 is a wasteful number, since it uses less digits than its factorization.

63434765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12686958.

The product of its digits is 181440, while the sum is 38.

The square root of 63434765 is about 7964.5944655080. The cubic root of 63434765 is about 398.8189432781.

The spelling of 63434765 in words is "sixty-three million, four hundred thirty-four thousand, seven hundred sixty-five".