75663793 has 2 divisors, whose sum is σ = 75663794. Its totient is φ = 75663792.

The previous prime is 75663769. The next prime is 75663803. The reversal of 75663793 is 39736657.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 69022864 + 6640929 = 8308^2 + 2577^2 .

It is a cyclic number.

It is not a de Polignac number, because 75663793 - 2²¹ = 73566641 is a prime.

It is a super-2 number, since 2×75663793² = 11450019142293698, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (75663293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37831896 + 37831897.

It is an arithmetic number, because the mean of its divisors is an integer number (37831897).

Almost surely, 2^75663793 is an apocalyptic number.

It is an amenable number.

75663793 is a deficient number, since it is larger than the sum of its proper divisors (1).

75663793 is an equidigital number, since it uses as much as digits as its factorization.

75663793 is an evil number, because the sum of its binary digits is even.

The product of its digits is 714420, while the sum is 46.

The square root of 75663793 is about 8698.4937201794. The cubic root of 75663793 is about 422.9568239068.

The spelling of 75663793 in words is "seventy-five million, six hundred sixty-three thousand, seven hundred ninety-three".