65563475 has 12 divisors (see below), whose sum is σ = 86081544. Its totient is φ = 49365120.

The previous prime is 65563457. The next prime is 65563493. The reversal of 65563475 is 57436556.

It is an interprime number because it is at equal distance from previous prime (65563457) and next prime (65563493).

It is not a de Polignac number, because 65563475 - 2¹⁸ = 65301331 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 76709 + ... + 77558.

It is an arithmetic number, because the mean of its divisors is an integer number (7173462).

Almost surely, 2^65563475 is an apocalyptic number.

65563475 is a deficient number, since it is larger than the sum of its proper divisors (20518069).

65563475 is a wasteful number, since it uses less digits than its factorization.

65563475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154294 (or 154289 counting only the distinct ones).

The product of its digits is 378000, while the sum is 41.

The square root of 65563475 is about 8097.1275771103. The cubic root of 65563475 is about 403.2310697790.

The spelling of 65563475 in words is "sixty-five million, five hundred sixty-three thousand, four hundred seventy-five".