70840253 has 8 divisors (see below), whose sum is σ = 80640576. Its totient is φ = 61600000.

The previous prime is 70840249. The next prime is 70840339. The reversal of 70840253 is 35204807.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 70840253 - 2² = 70840249 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70840223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 139748 + ... + 140253.

It is an arithmetic number, because the mean of its divisors is an integer number (10080072).

Almost surely, 2^70840253 is an apocalyptic number.

It is an amenable number.

70840253 is a deficient number, since it is larger than the sum of its proper divisors (9800323).

70840253 is a wasteful number, since it uses less digits than its factorization.

70840253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 280035.

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 70840253 is about 8416.6651947193. The cubic root of 70840253 is about 413.7709862394.

The spelling of 70840253 in words is "seventy million, eight hundred forty thousand, two hundred fifty-three".