78082061 has 2 divisors, whose sum is σ = 78082062. Its totient is φ = 78082060.

The previous prime is 78082051. The next prime is 78082063. The reversal of 78082061 is 16028087.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 50055625 + 28026436 = 7075^2 + 5294^2 .

It is a cyclic number.

It is not a de Polignac number, because 78082061 - 2¹⁴ = 78065677 is a prime.

Together with 78082063, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78082063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39041030 + 39041031.

It is an arithmetic number, because the mean of its divisors is an integer number (39041031).

Almost surely, 2^78082061 is an apocalyptic number.

It is an amenable number.

78082061 is a deficient number, since it is larger than the sum of its proper divisors (1).

78082061 is an equidigital number, since it uses as much as digits as its factorization.

78082061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5376, while the sum is 32.

The square root of 78082061 is about 8836.4054343381. The cubic root of 78082061 is about 427.4156526818.

The spelling of 78082061 in words is "seventy-eight million, eighty-two thousand, sixty-one".