75366513 has 6 divisors (see below), whose sum is σ = 108862754. Its totient is φ = 50244336.

The previous prime is 75366509. The next prime is 75366517. The reversal of 75366513 is 31566357.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (75366509) and next prime (75366517).

It can be written as a sum of positive squares in only one way, i.e., 50296464 + 25070049 = 7092^2 + 5007^2 .

It is not a de Polignac number, because 75366513 - 2² = 75366509 is a prime.

It is a super-2 number, since 2×75366513² = 11360222563558338, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (75366517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4187020 + ... + 4187037.

Almost surely, 2^75366513 is an apocalyptic number.

It is an amenable number.

75366513 is a deficient number, since it is larger than the sum of its proper divisors (33496241).

75366513 is a wasteful number, since it uses less digits than its factorization.

75366513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8374063 (or 8374060 counting only the distinct ones).

The product of its digits is 56700, while the sum is 36.

The square root of 75366513 is about 8681.3888865780. The cubic root of 75366513 is about 422.4021700829.

The spelling of 75366513 in words is "seventy-five million, three hundred sixty-six thousand, five hundred thirteen".