70001599 has 2 divisors, whose sum is σ = 70001600. Its totient is φ = 70001598.

The previous prime is 70001593. The next prime is 70001611. The reversal of 70001599 is 99510007.

It is a weak prime.

It is an emirp because it is prime and its reverse (99510007) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-70001599 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 70001599.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70001593) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35000799 + 35000800.

It is an arithmetic number, because the mean of its divisors is an integer number (35000800).

Almost surely, 2^70001599 is an apocalyptic number.

70001599 is a deficient number, since it is larger than the sum of its proper divisors (1).

70001599 is an equidigital number, since it uses as much as digits as its factorization.

70001599 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2835, while the sum is 31.

The square root of 70001599 is about 8366.6958233224. The cubic root of 70001599 is about 412.1316680213.

The spelling of 70001599 in words is "seventy million, one thousand, five hundred ninety-nine".