69770087 has 2 divisors, whose sum is σ = 69770088. Its totient is φ = 69770086.

The previous prime is 69770053. The next prime is 69770131. The reversal of 69770087 is 78007796.

It is an a-pointer prime, because the next prime (69770131) can be obtained adding 69770087 to its sum of digits (44).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 69770087 - 2¹⁸ = 69507943 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (69770287) 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, 34885043 + 34885044.

It is an arithmetic number, because the mean of its divisors is an integer number (34885044).

Almost surely, 2^69770087 is an apocalyptic number.

69770087 is a deficient number, since it is larger than the sum of its proper divisors (1).

69770087 is an equidigital number, since it uses as much as digits as its factorization.

69770087 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 148176, while the sum is 44.

The square root of 69770087 is about 8352.8490349102. The cubic root of 69770087 is about 411.6768269569.

The spelling of 69770087 in words is "sixty-nine million, seven hundred seventy thousand, eighty-seven".