70490071 has 2 divisors, whose sum is σ = 70490072. Its totient is φ = 70490070.

The previous prime is 70490059. The next prime is 70490089. The reversal of 70490071 is 17009407.

It is a weak prime.

It is an emirp because it is prime and its reverse (17009407) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 70490071 - 2¹¹ = 70488023 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70490011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35245035 + 35245036.

It is an arithmetic number, because the mean of its divisors is an integer number (35245036).

Almost surely, 2^70490071 is an apocalyptic number.

70490071 is a deficient number, since it is larger than the sum of its proper divisors (1).

70490071 is an equidigital number, since it uses as much as digits as its factorization.

70490071 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1764, while the sum is 28.

The square root of 70490071 is about 8395.8365277082. The cubic root of 70490071 is about 413.0880667842.

Adding to 70490071 its reverse (17009407), we get a palindrome (87499478).

The spelling of 70490071 in words is "seventy million, four hundred ninety thousand, seventy-one".