694900069 has 4 divisors (see below), whose sum is σ = 694953196. Its totient is φ = 694846944.

The previous prime is 694900049. The next prime is 694900079. The reversal of 694900069 is 960009496.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 127983969 + 566916100 = 11313^2 + 23810^2 .

It is a cyclic number.

It is not a de Polignac number, because 694900069 - 2¹⁵ = 694867301 is a prime.

It is a super-2 number, since 2×694900069² = 965772211792409522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 694899998 and 694900034.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (694900009) 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, 8377 + ... + 38209.

It is an arithmetic number, because the mean of its divisors is an integer number (173738299).

Almost surely, 2^694900069 is an apocalyptic number.

It is an amenable number.

694900069 is a deficient number, since it is larger than the sum of its proper divisors (53127).

694900069 is a wasteful number, since it uses less digits than its factorization.

694900069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53126.

The product of its (nonzero) digits is 104976, while the sum is 43.

The square root of 694900069 is about 26360.9572853491. The cubic root of 694900069 is about 885.7424346475.

The spelling of 694900069 in words is "six hundred ninety-four million, nine hundred thousand, sixty-nine".