65720094 has 32 divisors (see below), whose sum is σ = 144823680. Its totient is φ = 19716000.

The previous prime is 65720071. The next prime is 65720117. The reversal of 65720094 is 49002756.

It is an interprime number because it is at equal distance from previous prime (65720071) and next prime (65720117).

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1737 + ... + 11595.

It is an arithmetic number, because the mean of its divisors is an integer number (4525740).

Almost surely, 2^65720094 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65720094, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72411840).

65720094 is an abundant number, since it is smaller than the sum of its proper divisors (79103586).

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

65720094 is a wasteful number, since it uses less digits than its factorization.

65720094 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9976.

The product of its (nonzero) digits is 15120, while the sum is 33.

The square root of 65720094 is about 8106.7930774135. The cubic root of 65720094 is about 403.5518959001.

The spelling of 65720094 in words is "sixty-five million, seven hundred twenty thousand, ninety-four".