699412081 has 2 divisors, whose sum is σ = 699412082. Its totient is φ = 699412080.

The previous prime is 699412069. The next prime is 699412093. The reversal of 699412081 is 180214996.

It is a balanced prime because it is at equal distance from previous prime (699412069) and next prime (699412093).

It can be written as a sum of positive squares in only one way, i.e., 669981456 + 29430625 = 25884^2 + 5425^2 .

It is a cyclic number.

It is not a de Polignac number, because 699412081 - 2²⁷ = 565194353 is a prime.

It is a super-2 number, since 2×699412081² = 978354518097501122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (699418081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 349706040 + 349706041.

It is an arithmetic number, because the mean of its divisors is an integer number (349706041).

Almost surely, 2^699412081 is an apocalyptic number.

It is an amenable number.

699412081 is a deficient number, since it is larger than the sum of its proper divisors (1).

699412081 is an equidigital number, since it uses as much as digits as its factorization.

699412081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31104, while the sum is 40.

The square root of 699412081 is about 26446.4001520056. The cubic root of 699412081 is about 887.6553532449.

The spelling of 699412081 in words is "six hundred ninety-nine million, four hundred twelve thousand, eighty-one".