65413998 has 48 divisors (see below), whose sum is σ = 160676880. Its totient is φ = 19066752.

The previous prime is 65413993. The next prime is 65414023. The reversal of 65413998 is 89931456.

It is a happy number.

It is a super-2 number, since 2×65413998² = 8557982268688008, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65413991) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2911 + ... + 11802.

It is an arithmetic number, because the mean of its divisors is an integer number (3347435).

Almost surely, 2^65413998 is an apocalyptic number.

65413998 is an abundant number, since it is smaller than the sum of its proper divisors (95262882).

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

65413998 is a wasteful number, since it uses less digits than its factorization.

65413998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14753 (or 14750 counting only the distinct ones).

The product of its digits is 233280, while the sum is 45.

The square root of 65413998 is about 8087.8920615943. The cubic root of 65413998 is about 402.9243968212.

The spelling of 65413998 in words is "sixty-five million, four hundred thirteen thousand, nine hundred ninety-eight".