70384157 has 2 divisors, whose sum is σ = 70384158. Its totient is φ = 70384156.

The previous prime is 70384147. The next prime is 70384169. The reversal of 70384157 is 75148307.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 70375321 + 8836 = 8389^2 + 94^2 .

It is a cyclic number.

It is not a de Polignac number, because 70384157 - 2⁴ = 70384141 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 (70384147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35192078 + 35192079.

It is an arithmetic number, because the mean of its divisors is an integer number (35192079).

Almost surely, 2^70384157 is an apocalyptic number.

It is an amenable number.

70384157 is a deficient number, since it is larger than the sum of its proper divisors (1).

70384157 is an equidigital number, since it uses as much as digits as its factorization.

70384157 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23520, while the sum is 35.

The square root of 70384157 is about 8389.5266255016. The cubic root of 70384157 is about 412.8810695901.

The spelling of 70384157 in words is "seventy million, three hundred eighty-four thousand, one hundred fifty-seven".