70491249 has 8 divisors (see below), whose sum is σ = 104431520. Its totient is φ = 46994148.

The previous prime is 70491247. The next prime is 70491263. The reversal of 70491249 is 94219407.

It is not a de Polignac number, because 70491249 - 2¹ = 70491247 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70491247) 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 in 7 ways as a sum of consecutive naturals, for example, 1305367 + ... + 1305420.

It is an arithmetic number, because the mean of its divisors is an integer number (13053940).

Almost surely, 2^70491249 is an apocalyptic number.

It is an amenable number.

70491249 is a deficient number, since it is larger than the sum of its proper divisors (33940271).

70491249 is a wasteful number, since it uses less digits than its factorization.

70491249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2610796 (or 2610790 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 70491249 is about 8395.9066812346. The cubic root of 70491249 is about 413.0903678886.

The spelling of 70491249 in words is "seventy million, four hundred ninety-one thousand, two hundred forty-nine".