65029998 has 64 divisors (see below), whose sum is σ = 151787520. Its totient is φ = 18508160.

The previous prime is 65029997. The next prime is 65030011. The reversal of 65029998 is 89992056.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65029997) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 135523 + ... + 136001.

It is an arithmetic number, because the mean of its divisors is an integer number (2371680).

Almost surely, 2^65029998 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65029998, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75893760).

65029998 is an abundant number, since it is smaller than the sum of its proper divisors (86757522).

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

65029998 is a wasteful number, since it uses less digits than its factorization.

65029998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 534 (or 512 counting only the distinct ones).

The product of its (nonzero) digits is 349920, while the sum is 48.

The square root of 65029998 is about 8064.1179306853. The cubic root of 65029998 is about 402.1344195416.

The spelling of 65029998 in words is "sixty-five million, twenty-nine thousand, nine hundred ninety-eight".