756631061 has 2 divisors, whose sum is σ = 756631062. Its totient is φ = 756631060.

The previous prime is 756631039. The next prime is 756631081. The reversal of 756631061 is 160136657.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 644398225 + 112232836 = 25385^2 + 10594^2 .

It is an emirp because it is prime and its reverse (160136657) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 756631061 - 2¹⁰ = 756630037 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (756631081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 378315530 + 378315531.

It is an arithmetic number, because the mean of its divisors is an integer number (378315531).

Almost surely, 2^756631061 is an apocalyptic number.

It is an amenable number.

756631061 is a deficient number, since it is larger than the sum of its proper divisors (1).

756631061 is an equidigital number, since it uses as much as digits as its factorization.

756631061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 22680, while the sum is 35.

The square root of 756631061 is about 27506.9275092657. The cubic root of 756631061 is about 911.2300963148.

The spelling of 756631061 in words is "seven hundred fifty-six million, six hundred thirty-one thousand, sixty-one".