699034310712049 has 27 divisors (see below), whose sum is σ = 770011799676939. Its totient is φ = 634307387397840.

The previous prime is 699034310711963. The next prime is 699034310712061. The reversal of 699034310712049 is 940217013430996.

The square root of 699034310712049 is 26439257.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 103407442413025 + 595626868299024 = 10168945^2 + 24405468^2 .

It is not a de Polignac number, because 699034310712049 - 2³⁹ = 698484554898161 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 699034310711984 and 699034310712002.

It is not an unprimeable number, because it can be changed into a prime (699034310712079) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 20278892884 + ... + 20278927354.

Almost surely, 2^{699034310712049} is an apocalyptic number.

699034310712049 is the 26439257-th square number.

699034310712049 is the 13219629-th centered octagonal number.

It is an amenable number.

699034310712049 is a deficient number, since it is larger than the sum of its proper divisors (70977488964890).

699034310712049 is an frugal number, since it uses more digits than its factorization.

699034310712049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69086 (or 34543 counting only the distinct ones).

The product of its (nonzero) digits is 8817984, while the sum is 58.

The spelling of 699034310712049 in words is "six hundred ninety-nine trillion, thirty-four billion, three hundred ten million, seven hundred twelve thousand, forty-nine".