78352787 has 2 divisors, whose sum is σ = 78352788. Its totient is φ = 78352786.

The previous prime is 78352739. The next prime is 78352811. The reversal of 78352787 is 78725387.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 78352787 - 2²⁶ = 11243923 is a prime.

It is a super-2 number, since 2×78352787² = 12278318461334738, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (78352727) 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, 39176393 + 39176394.

It is an arithmetic number, because the mean of its divisors is an integer number (39176394).

Almost surely, 2^78352787 is an apocalyptic number.

78352787 is a deficient number, since it is larger than the sum of its proper divisors (1).

78352787 is an equidigital number, since it uses as much as digits as its factorization.

78352787 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 658560, while the sum is 47.

The square root of 78352787 is about 8851.7109645537. The cubic root of 78352787 is about 427.9090611666.

The spelling of 78352787 in words is "seventy-eight million, three hundred fifty-two thousand, seven hundred eighty-seven".