65061145 has 4 divisors (see below), whose sum is σ = 78073380. Its totient is φ = 52048912.

The previous prime is 65061131. The next prime is 65061173. The reversal of 65061145 is 54116056.

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 37687321 + 27373824 = 6139^2 + 5232^2 .

It is a cyclic number.

It is not a de Polignac number, because 65061145 - 2¹⁵ = 65028377 is a prime.

It is a super-2 number, since 2×65061145² = 8465905177422050, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6506110 + ... + 6506119.

It is an arithmetic number, because the mean of its divisors is an integer number (19518345).

Almost surely, 2^65061145 is an apocalyptic number.

It is an amenable number.

65061145 is a deficient number, since it is larger than the sum of its proper divisors (13012235).

65061145 is a wasteful number, since it uses less digits than its factorization.

65061145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13012234.

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 65061145 is about 8066.0489088525. The cubic root of 65061145 is about 402.1986118732.

The spelling of 65061145 in words is "sixty-five million, sixty-one thousand, one hundred forty-five".