65140798 has 16 divisors (see below), whose sum is σ = 99403920. Its totient is φ = 32011200.

The previous prime is 65140783. The next prime is 65140811. The reversal of 65140798 is 89704156.

It is a self number, because there is not a number n which added to its sum of digits gives 65140798.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27418 + ... + 29698.

It is an arithmetic number, because the mean of its divisors is an integer number (6212745).

Almost surely, 2^65140798 is an apocalyptic number.

65140798 is a deficient number, since it is larger than the sum of its proper divisors (34263122).

65140798 is a wasteful number, since it uses less digits than its factorization.

65140798 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2523.

The product of its (nonzero) digits is 60480, while the sum is 40.

The square root of 65140798 is about 8070.9849460893. The cubic root of 65140798 is about 402.3626793880.

The spelling of 65140798 in words is "sixty-five million, one hundred forty thousand, seven hundred ninety-eight".