70802681 has 2 divisors, whose sum is σ = 70802682. Its totient is φ = 70802680.

The previous prime is 70802657. The next prime is 70802687. The reversal of 70802681 is 18620807.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 70291456 + 511225 = 8384^2 + 715^2 .

It is an emirp because it is prime and its reverse (18620807) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 70802681 - 2¹⁴ = 70786297 is a prime.

It is a super-2 number, since 2×70802681² = 10026039273575522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (70802687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35401340 + 35401341.

It is an arithmetic number, because the mean of its divisors is an integer number (35401341).

Almost surely, 2^70802681 is an apocalyptic number.

It is an amenable number.

70802681 is a deficient number, since it is larger than the sum of its proper divisors (1).

70802681 is an equidigital number, since it uses as much as digits as its factorization.

70802681 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5376, while the sum is 32.

The square root of 70802681 is about 8414.4328983004. The cubic root of 70802681 is about 413.6978218444.

The spelling of 70802681 in words is "seventy million, eight hundred two thousand, six hundred eighty-one".