70144787 has 2 divisors, whose sum is σ = 70144788. Its totient is φ = 70144786.

The previous prime is 70144759. The next prime is 70144799. The reversal of 70144787 is 78744107.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 70144787 - 2²² = 65950483 is a prime.

It is a super-2 number, since 2×70144787² = 9840582286550738, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 70144787.

It is not a weakly prime, because it can be changed into another prime (70144747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35072393 + 35072394.

It is an arithmetic number, because the mean of its divisors is an integer number (35072394).

Almost surely, 2^70144787 is an apocalyptic number.

70144787 is a deficient number, since it is larger than the sum of its proper divisors (1).

70144787 is an equidigital number, since it uses as much as digits as its factorization.

70144787 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 43904, while the sum is 38.

The square root of 70144787 is about 8375.2484739260. The cubic root of 70144787 is about 412.4124812185.

The spelling of 70144787 in words is "seventy million, one hundred forty-four thousand, seven hundred eighty-seven".