761633993 has 2 divisors, whose sum is σ = 761633994. Its totient is φ = 761633992.

The previous prime is 761633953. The next prime is 761634001. The reversal of 761633993 is 399336167.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 434639104 + 326994889 = 20848^2 + 18083^2 .

It is a cyclic number.

It is not a de Polignac number, because 761633993 - 2¹⁰ = 761632969 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (761633933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 380816996 + 380816997.

It is an arithmetic number, because the mean of its divisors is an integer number (380816997).

Almost surely, 2^761633993 is an apocalyptic number.

It is an amenable number.

761633993 is a deficient number, since it is larger than the sum of its proper divisors (1).

761633993 is an equidigital number, since it uses as much as digits as its factorization.

761633993 is an evil number, because the sum of its binary digits is even.

The product of its digits is 551124, while the sum is 47.

The square root of 761633993 is about 27597.7171700849. The cubic root of 761633993 is about 913.2340721716.

The spelling of 761633993 in words is "seven hundred sixty-one million, six hundred thirty-three thousand, nine hundred ninety-three".