706730881 has 4 divisors (see below), whose sum is σ = 706793472. Its totient is φ = 706668292.

The previous prime is 706730863. The next prime is 706730903. The reversal of 706730881 is 188037607.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 706730881 - 2⁷ = 706730753 is a prime.

It is a super-2 number, since 2×706730881² = 998937076318072322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (706730831) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9121 + ... + 38686.

It is an arithmetic number, because the mean of its divisors is an integer number (176698368).

Almost surely, 2^706730881 is an apocalyptic number.

It is an amenable number.

706730881 is a deficient number, since it is larger than the sum of its proper divisors (62591).

706730881 is a wasteful number, since it uses less digits than its factorization.

706730881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62590.

The product of its (nonzero) digits is 56448, while the sum is 40.

The square root of 706730881 is about 26584.4104881037. The cubic root of 706730881 is about 890.7408219718.

The spelling of 706730881 in words is "seven hundred six million, seven hundred thirty thousand, eight hundred eighty-one".