65140998 has 16 divisors (see below), whose sum is σ = 140303856. Its totient is φ = 20043360.

The previous prime is 65140981. The next prime is 65141003. The reversal of 65140998 is 89904156.

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, 417493 + ... + 417648.

It is an arithmetic number, because the mean of its divisors is an integer number (8768991).

Almost surely, 2^65140998 is an apocalyptic number.

65140998 is an abundant number, since it is smaller than the sum of its proper divisors (75162858).

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

65140998 is a wasteful number, since it uses less digits than its factorization.

65140998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 835159.

The product of its (nonzero) digits is 77760, while the sum is 42.

The square root of 65140998 is about 8070.9973361413. The cubic root of 65140998 is about 402.3630911753.

The spelling of 65140998 in words is "sixty-five million, one hundred forty thousand, nine hundred ninety-eight".