65105506 has 4 divisors (see below), whose sum is σ = 97658262. Its totient is φ = 32552752.

The previous prime is 65105503. The next prime is 65105507. The reversal of 65105506 is 60550156.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 47541025 + 17564481 = 6895^2 + 4191^2 .

It is not an unprimeable number, because it can be changed into a prime (65105501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16276375 + ... + 16276378.

Almost surely, 2^65105506 is an apocalyptic number.

65105506 is a deficient number, since it is larger than the sum of its proper divisors (32552756).

65105506 is a wasteful number, since it uses less digits than its factorization.

65105506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32552755.

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

The square root of 65105506 is about 8068.7982996231. The cubic root of 65105506 is about 402.2900022059.

The spelling of 65105506 in words is "sixty-five million, one hundred five thousand, five hundred six".