65185230 has 64 divisors (see below), whose sum is σ = 173933568. Its totient is φ = 15500160.

The previous prime is 65185229. The next prime is 65185249. The reversal of 65185230 is 3258156.

It is a super-2 number, since 2×65185230² = 8498228420305800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15627 + ... + 19353.

It is an arithmetic number, because the mean of its divisors is an integer number (2717712).

Almost surely, 2^65185230 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65185230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86966784).

65185230 is an abundant number, since it is smaller than the sum of its proper divisors (108748338).

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

65185230 is a wasteful number, since it uses less digits than its factorization.

65185230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3801.

The product of its (nonzero) digits is 7200, while the sum is 30.

The square root of 65185230 is about 8073.7370529390. The cubic root of 65185230 is about 402.4541413489.

The spelling of 65185230 in words is "sixty-five million, one hundred eighty-five thousand, two hundred thirty".