761399957 has 2 divisors, whose sum is σ = 761399958. Its totient is φ = 761399956.

The previous prime is 761399929. The next prime is 761400019. The reversal of 761399957 is 759993167.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 653364721 + 108035236 = 25561^2 + 10394^2 .

It is a cyclic number.

It is not a de Polignac number, because 761399957 - 2⁸ = 761399701 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (761399057) 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, 380699978 + 380699979.

It is an arithmetic number, because the mean of its divisors is an integer number (380699979).

Almost surely, 2^761399957 is an apocalyptic number.

It is an amenable number.

761399957 is a deficient number, since it is larger than the sum of its proper divisors (1).

761399957 is an equidigital number, since it uses as much as digits as its factorization.

761399957 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3214890, while the sum is 56.

The square root of 761399957 is about 27593.4767109910. The cubic root of 761399957 is about 913.1405226247.

The spelling of 761399957 in words is "seven hundred sixty-one million, three hundred ninety-nine thousand, nine hundred fifty-seven".