65729998 has 16 divisors (see below), whose sum is σ = 103574016. Its totient is φ = 31224600.

The previous prime is 65729959. The next prime is 65730023. The reversal of 65729998 is 89992756.

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, 2215 + ... + 11677.

It is an arithmetic number, because the mean of its divisors is an integer number (6473376).

Almost surely, 2^65729998 is an apocalyptic number.

65729998 is a deficient number, since it is larger than the sum of its proper divisors (37844018).

65729998 is a wasteful number, since it uses less digits than its factorization.

65729998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9639.

The product of its digits is 2449440, while the sum is 55.

The square root of 65729998 is about 8107.4039001397. The cubic root of 65729998 is about 403.5721666015.

The spelling of 65729998 in words is "sixty-five million, seven hundred twenty-nine thousand, nine hundred ninety-eight".