65099838 has 16 divisors (see below), whose sum is σ = 134689680. Its totient is φ = 20951616.

The previous prime is 65099831. The next prime is 65099843. The reversal of 65099838 is 83899056.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65099831) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 186895 + ... + 187242.

It is an arithmetic number, because the mean of its divisors is an integer number (8418105).

Almost surely, 2^65099838 is an apocalyptic number.

65099838 is an abundant number, since it is smaller than the sum of its proper divisors (69589842).

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

65099838 is a wasteful number, since it uses less digits than its factorization.

65099838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 374171.

The product of its (nonzero) digits is 466560, while the sum is 48.

The square root of 65099838 is about 8068.4470624774. The cubic root of 65099838 is about 402.2783275871.

The spelling of 65099838 in words is "sixty-five million, ninety-nine thousand, eight hundred thirty-eight".