761630381 has 2 divisors, whose sum is σ = 761630382. Its totient is φ = 761630380.

The previous prime is 761630369. The next prime is 761630383. The reversal of 761630381 is 183036167.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 736036900 + 25593481 = 27130^2 + 5059^2 .

It is a cyclic number.

It is not a de Polignac number, because 761630381 - 2²² = 757436077 is a prime.

It is a super-2 number, since 2×761630381² = 1160161674524410322, which contains 22 as substring.

Together with 761630383, it forms a pair of twin primes.

It is a Chen prime.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (761630383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 380815190 + 380815191.

It is an arithmetic number, because the mean of its divisors is an integer number (380815191).

Almost surely, 2^761630381 is an apocalyptic number.

It is an amenable number.

761630381 is a deficient number, since it is larger than the sum of its proper divisors (1).

761630381 is an equidigital number, since it uses as much as digits as its factorization.

761630381 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 761630381 is about 27597.6517298121. The cubic root of 761630381 is about 913.2326285181.

The spelling of 761630381 in words is "seven hundred sixty-one million, six hundred thirty thousand, three hundred eighty-one".