70883881 has 2 divisors, whose sum is σ = 70883882. Its totient is φ = 70883880.

The previous prime is 70883867. The next prime is 70883893. The reversal of 70883881 is 18838807.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 46785600 + 24098281 = 6840^2 + 4909^2 .

It is a cyclic number.

It is not a de Polignac number, because 70883881 - 2⁷ = 70883753 is a prime.

It is a super-2 number, since 2×70883881² = 10049049171244322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (70883831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35441940 + 35441941.

It is an arithmetic number, because the mean of its divisors is an integer number (35441941).

Almost surely, 2^70883881 is an apocalyptic number.

It is an amenable number.

70883881 is a deficient number, since it is larger than the sum of its proper divisors (1).

70883881 is an equidigital number, since it uses as much as digits as its factorization.

70883881 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 86016, while the sum is 43.

The square root of 70883881 is about 8419.2565586280. The cubic root of 70883881 is about 413.8559111007.

The spelling of 70883881 in words is "seventy million, eight hundred eighty-three thousand, eight hundred eighty-one".