65751145 has 8 divisors (see below), whose sum is σ = 78944904. Its totient is φ = 52571904.

The previous prime is 65751143. The next prime is 65751163. The reversal of 65751145 is 54115756.

It can be written as a sum of positive squares in 4 ways, for example, as 1157776 + 64593369 = 1076^2 + 8037^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 65751145 - 2¹ = 65751143 is a prime.

It is a super-2 number, since 2×65751145² = 8646426137622050, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 65751145.

It is not an unprimeable number, because it can be changed into a prime (65751143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15937 + ... + 19633.

It is an arithmetic number, because the mean of its divisors is an integer number (9868113).

Almost surely, 2^65751145 is an apocalyptic number.

It is an amenable number.

65751145 is a deficient number, since it is larger than the sum of its proper divisors (13193759).

65751145 is a wasteful number, since it uses less digits than its factorization.

65751145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7259.

The product of its digits is 21000, while the sum is 34.

The square root of 65751145 is about 8108.7079735307. The cubic root of 65751145 is about 403.6154417463.

The spelling of 65751145 in words is "sixty-five million, seven hundred fifty-one thousand, one hundred forty-five".