7828887061 has 2 divisors, whose sum is σ = 7828887062. Its totient is φ = 7828887060.

The previous prime is 7828887049. The next prime is 7828887089. The reversal of 7828887061 is 1607888287.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5569786161 + 2259100900 = 74631^2 + 47530^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7828887061 is a prime.

It is a super-3 number, since 3×7828887061³ (a number of 31 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 7828886993 and 7828887011.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7828887961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3914443530 + 3914443531.

It is an arithmetic number, because the mean of its divisors is an integer number (3914443531).

Almost surely, 2^7828887061 is an apocalyptic number.

It is an amenable number.

7828887061 is a deficient number, since it is larger than the sum of its proper divisors (1).

7828887061 is an equidigital number, since it uses as much as digits as its factorization.

7828887061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2408448, while the sum is 55.

The square root of 7828887061 is about 88480.9983047208. The cubic root of 7828887061 is about 1985.6376974320.

The spelling of 7828887061 in words is "seven billion, eight hundred twenty-eight million, eight hundred eighty-seven thousand, sixty-one".