65490075 has 72 divisors (see below), whose sum is σ = 137316608. Its totient is φ = 29211840.

The previous prime is 65490053. The next prime is 65490101. The reversal of 65490075 is 57009456.

It is not a de Polignac number, because 65490075 - 2⁵ = 65490043 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 67242 + ... + 68208.

Almost surely, 2^65490075 is an apocalyptic number.

65490075 is an abundant number, since it is smaller than the sum of its proper divisors (71826533).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

65490075 is a wasteful number, since it uses less digits than its factorization.

65490075 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1033 (or 1025 counting only the distinct ones).

The product of its (nonzero) digits is 37800, while the sum is 36.

The square root of 65490075 is about 8092.5938363420. The cubic root of 65490075 is about 403.0805377319.

The spelling of 65490075 in words is "sixty-five million, four hundred ninety thousand, seventy-five".