769025641 has 2 divisors, whose sum is σ = 769025642. Its totient is φ = 769025640.

The previous prime is 769025639. The next prime is 769025657. The reversal of 769025641 is 146520967.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 681210000 + 87815641 = 26100^2 + 9371^2 .

It is a cyclic number.

It is not a de Polignac number, because 769025641 - 2¹ = 769025639 is a prime.

Together with 769025639, it forms a pair of twin primes.

769025641 is a modest number, since divided by 25641 gives 769 as remainder.

It is equal to p_39633268 and since 769025641 and 39633268 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 769025594 and 769025603.

It is not a weakly prime, because it can be changed into another prime (769029641) 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, 384512820 + 384512821.

It is an arithmetic number, because the mean of its divisors is an integer number (384512821).

Almost surely, 2^769025641 is an apocalyptic number.

It is an amenable number.

769025641 is a deficient number, since it is larger than the sum of its proper divisors (1).

769025641 is an equidigital number, since it uses as much as digits as its factorization.

769025641 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 90720, while the sum is 40.

The square root of 769025641 is about 27731.3115629247. The cubic root of 769025641 is about 916.1788744609.

The spelling of 769025641 in words is "seven hundred sixty-nine million, twenty-five thousand, six hundred forty-one".