828719690 has 16 divisors (see below), whose sum is σ = 1492146792. Its totient is φ = 331387584.

The previous prime is 828719681. The next prime is 828719699. The reversal of 828719690 is 96917828.

It is an interprime number because it is at equal distance from previous prime (828719681) and next prime (828719699).

It can be written as a sum of positive squares in 4 ways, for example, as 559464409 + 269255281 = 23653^2 + 16409^2 .

It is a super-2 number, since 2×828719690² = 1373552649187392200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (828719699) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28592 + ... + 49748.

Almost surely, 2^828719690 is an apocalyptic number.

828719690 is a deficient number, since it is larger than the sum of its proper divisors (663427102).

828719690 is a wasteful number, since it uses less digits than its factorization.

828719690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25081.

The product of its (nonzero) digits is 435456, while the sum is 50.

The square root of 828719690 is about 28787.4919018660. The cubic root of 828719690 is about 939.2961722481.

The spelling of 828719690 in words is "eight hundred twenty-eight million, seven hundred nineteen thousand, six hundred ninety".