65399061 has 16 divisors (see below), whose sum is σ = 107321984. Its totient is φ = 34496064.

The previous prime is 65399039. The next prime is 65399071. The reversal of 65399061 is 16099356.

It is not a de Polignac number, because 65399061 - 2⁵ = 65399029 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65399071) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 119506 + ... + 120051.

It is an arithmetic number, because the mean of its divisors is an integer number (6707624).

Almost surely, 2^65399061 is an apocalyptic number.

It is an amenable number.

65399061 is a deficient number, since it is larger than the sum of its proper divisors (41922923).

65399061 is a wasteful number, since it uses less digits than its factorization.

65399061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 239580.

The product of its (nonzero) digits is 43740, while the sum is 39.

The square root of 65399061 is about 8086.9685915057. The cubic root of 65399061 is about 402.8937258126.

The spelling of 65399061 in words is "sixty-five million, three hundred ninety-nine thousand, sixty-one".