65705430 has 64 divisors (see below), whose sum is σ = 186052608. Its totient is φ = 14532480.

The previous prime is 65705417. The next prime is 65705443. The reversal of 65705430 is 3450756.

It is an interprime number because it is at equal distance from previous prime (65705417) and next prime (65705443).

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, 1464 + ... + 11556.

It is an arithmetic number, because the mean of its divisors is an integer number (2907072).

Almost surely, 2^65705430 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65705430, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (93026304).

65705430 is an abundant number, since it is smaller than the sum of its proper divisors (120347178).

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

65705430 is a wasteful number, since it uses less digits than its factorization.

65705430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10141.

The product of its (nonzero) digits is 12600, while the sum is 30.

The square root of 65705430 is about 8105.8886002708. Note that the first 3 decimals coincide. The cubic root of 65705430 is about 403.5218790775.

The spelling of 65705430 in words is "sixty-five million, seven hundred five thousand, four hundred thirty".