70807249 has 2 divisors, whose sum is σ = 70807250. Its totient is φ = 70807248.

The previous prime is 70807237. The next prime is 70807267. The reversal of 70807249 is 94270807.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 70677649 + 129600 = 8407^2 + 360^2 .

It is a cyclic number.

It is not a de Polignac number, because 70807249 - 2²¹ = 68710097 is a prime.

It is not a weakly prime, because it can be changed into another prime (70801249) 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, 35403624 + 35403625.

It is an arithmetic number, because the mean of its divisors is an integer number (35403625).

Almost surely, 2^70807249 is an apocalyptic number.

It is an amenable number.

70807249 is a deficient number, since it is larger than the sum of its proper divisors (1).

70807249 is an equidigital number, since it uses as much as digits as its factorization.

70807249 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 28224, while the sum is 37.

The square root of 70807249 is about 8414.7043322983. The cubic root of 70807249 is about 413.7067185462.

The spelling of 70807249 in words is "seventy million, eight hundred seven thousand, two hundred forty-nine".