70840269 has 6 divisors (see below), whose sum is σ = 102324846. Its totient is φ = 47226840.

The previous prime is 70840249. The next prime is 70840339. The reversal of 70840269 is 96204807.

It can be written as a sum of positive squares in only one way, i.e., 67864644 + 2975625 = 8238^2 + 1725^2 .

It is not a de Polignac number, because 70840269 - 2⁷ = 70840141 is a prime.

It is a super-2 number, since 2×70840269² = 10036687423984722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70840229) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3935562 + ... + 3935579.

It is an arithmetic number, because the mean of its divisors is an integer number (17054141).

Almost surely, 2^70840269 is an apocalyptic number.

It is an amenable number.

70840269 is a deficient number, since it is larger than the sum of its proper divisors (31484577).

70840269 is a wasteful number, since it uses less digits than its factorization.

70840269 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7871147 (or 7871144 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 70840269 is about 8416.6661452145. Note that the first 3 decimals coincide. The cubic root of 70840269 is about 413.7710173909.

The spelling of 70840269 in words is "seventy million, eight hundred forty thousand, two hundred sixty-nine".