75296813 has 8 divisors (see below), whose sum is σ = 78101400. Its totient is φ = 72532800.

The previous prime is 75296807. The next prime is 75296839. The reversal of 75296813 is 31869257.

It can be written as a sum of positive squares in 4 ways, for example, as 45670564 + 29626249 = 6758^2 + 5443^2 .

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 75296813 - 2⁴ = 75296797 is a prime.

It is a super-2 number, since 2×75296813² = 11339220095913938, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75299813) 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, 6338 + ... + 13811.

It is an arithmetic number, because the mean of its divisors is an integer number (9762675).

Almost surely, 2^75296813 is an apocalyptic number.

It is an amenable number.

75296813 is a deficient number, since it is larger than the sum of its proper divisors (2804587).

75296813 is a wasteful number, since it uses less digits than its factorization.

75296813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20287.

The product of its digits is 90720, while the sum is 41.

The square root of 75296813 is about 8677.3736233955. The cubic root of 75296813 is about 422.2719154526.

The spelling of 75296813 in words is "seventy-five million, two hundred ninety-six thousand, eight hundred thirteen".