70775381 has 8 divisors (see below), whose sum is σ = 71898840. Its totient is φ = 69659392.

The previous prime is 70775363. The next prime is 70775401. The reversal of 70775381 is 18357707.

It can be written as a sum of positive squares in 4 ways, for example, as 7890481 + 62884900 = 2809^2 + 7930^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 70775381 - 2¹⁰ = 70774357 is a prime.

It is a super-2 number, since 2×70775381² = 10018309111390322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70775281) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19031 + ... + 22443.

It is an arithmetic number, because the mean of its divisors is an integer number (8987355).

Almost surely, 2^70775381 is an apocalyptic number.

It is an amenable number.

70775381 is a deficient number, since it is larger than the sum of its proper divisors (1123459).

70775381 is a wasteful number, since it uses less digits than its factorization.

70775381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3735.

The product of its (nonzero) digits is 41160, while the sum is 38.

The square root of 70775381 is about 8412.8105291870. The cubic root of 70775381 is about 413.6446439974.

The spelling of 70775381 in words is "seventy million, seven hundred seventy-five thousand, three hundred eighty-one".