65061505 has 4 divisors (see below), whose sum is σ = 78073812. Its totient is φ = 52049200.

The previous prime is 65061497. The next prime is 65061509. The reversal of 65061505 is 50516056.

65061505 is nontrivially palindromic in base 9.

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 12194064 + 52867441 = 3492^2 + 7271^2 .

It is not a de Polignac number, because 65061505 - 2³ = 65061497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65061509) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6506146 + ... + 6506155.

It is an arithmetic number, because the mean of its divisors is an integer number (19518453).

Almost surely, 2^65061505 is an apocalyptic number.

It is an amenable number.

65061505 is a deficient number, since it is larger than the sum of its proper divisors (13012307).

65061505 is a wasteful number, since it uses less digits than its factorization.

65061505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13012306.

The product of its (nonzero) digits is 4500, while the sum is 28.

The square root of 65061505 is about 8066.0712245802. The cubic root of 65061505 is about 402.1993536945.

The spelling of 65061505 in words is "sixty-five million, sixty-one thousand, five hundred five".