65075540 has 12 divisors (see below), whose sum is σ = 136658676. Its totient is φ = 26030208.

The previous prime is 65075531. The next prime is 65075561. The reversal of 65075540 is 4557056.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 14409616 + 50665924 = 3796^2 + 7118^2 .

It is a junction number, because it is equal to n+sod(n) for n = 65075497 and 65075506.

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, 1626869 + ... + 1626908.

It is an arithmetic number, because the mean of its divisors is an integer number (11388223).

Almost surely, 2^65075540 is an apocalyptic number.

It is an amenable number.

65075540 is an abundant number, since it is smaller than the sum of its proper divisors (71583136).

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

65075540 is a wasteful number, since it uses less digits than its factorization.

65075540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3253786 (or 3253784 counting only the distinct ones).

The product of its (nonzero) digits is 21000, while the sum is 32.

The square root of 65075540 is about 8066.9411799021. The cubic root of 65075540 is about 402.2282722902.

The spelling of 65075540 in words is "sixty-five million, seventy-five thousand, five hundred forty".