415478565 has 20 divisors (see below), whose sum is σ = 744784524. Its totient is φ = 221588352.

The previous prime is 415478561. The next prime is 415478573. The reversal of 415478565 is 565874514.

415478565 is a `hidden beast` number, since 4 + 15 + 4 + 78 + 565 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 248913729 + 166564836 = 15777^2 + 12906^2 .

It is not a de Polignac number, because 415478565 - 2² = 415478561 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 415478565.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (415478561) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 512532 + ... + 513341.

Almost surely, 2^415478565 is an apocalyptic number.

415478565 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

415478565 is a deficient number, since it is larger than the sum of its proper divisors (329305959).

415478565 is a wasteful number, since it uses less digits than its factorization.

415478565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1025890 (or 1025881 counting only the distinct ones).

The product of its digits is 672000, while the sum is 45.

The square root of 415478565 is about 20383.2913191172. The cubic root of 415478565 is about 746.1902000009.

The spelling of 415478565 in words is "four hundred fifteen million, four hundred seventy-eight thousand, five hundred sixty-five".