70700681 has 4 divisors (see below), whose sum is σ = 71429652. Its totient is φ = 69971712.

The previous prime is 70700659. The next prime is 70700713. The reversal of 70700681 is 18600707.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 18600707 = 3989 ⋅4663.

It can be written as a sum of positive squares in 2 ways, for example, as 43494025 + 27206656 = 6595^2 + 5216^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-70700681 is a prime.

It is a super-2 number, since 2×70700681² = 9997172587727522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70700381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 364340 + ... + 364533.

It is an arithmetic number, because the mean of its divisors is an integer number (17857413).

Almost surely, 2^70700681 is an apocalyptic number.

It is an amenable number.

70700681 is a deficient number, since it is larger than the sum of its proper divisors (728971).

70700681 is an equidigital number, since it uses as much as digits as its factorization.

70700681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 728970.

The product of its (nonzero) digits is 2352, while the sum is 29.

The square root of 70700681 is about 8408.3696992937. The cubic root of 70700681 is about 413.4990654467.

The spelling of 70700681 in words is "seventy million, seven hundred thousand, six hundred eighty-one".