75140465 has 8 divisors (see below), whose sum is σ = 91061928. Its totient is φ = 59516800.

The previous prime is 75140437. The next prime is 75140467. The reversal of 75140465 is 56404157.

It can be written as a sum of positive squares in 4 ways, for example, as 14409616 + 60730849 = 3796^2 + 7793^2 .

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

It is not a de Polignac number, because 75140465 - 2⁸ = 75140209 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (75140467) 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, 73892 + ... + 74901.

It is an arithmetic number, because the mean of its divisors is an integer number (11382741).

Almost surely, 2^75140465 is an apocalyptic number.

It is an amenable number.

75140465 is a deficient number, since it is larger than the sum of its proper divisors (15921463).

75140465 is a wasteful number, since it uses less digits than its factorization.

75140465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148899.

The product of its (nonzero) digits is 16800, while the sum is 32.

The square root of 75140465 is about 8668.3599948318. The cubic root of 75140465 is about 421.9794412841.

The spelling of 75140465 in words is "seventy-five million, one hundred forty thousand, four hundred sixty-five".