69564769 has 2 divisors, whose sum is σ = 69564770. Its totient is φ = 69564768.

The previous prime is 69564767. The next prime is 69564797. The reversal of 69564769 is 96746596.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42732369 + 26832400 = 6537^2 + 5180^2 .

It is a cyclic number.

It is not a de Polignac number, because 69564769 - 2¹ = 69564767 is a prime.

It is a super-2 number, since 2×69564769² = 9678514172046722, which contains 22 as substring.

Together with 69564767, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (69564763) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34782384 + 34782385.

It is an arithmetic number, because the mean of its divisors is an integer number (34782385).

Almost surely, 2^69564769 is an apocalyptic number.

It is an amenable number.

69564769 is a deficient number, since it is larger than the sum of its proper divisors (1).

69564769 is an equidigital number, since it uses as much as digits as its factorization.

69564769 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2449440, while the sum is 52.

The square root of 69564769 is about 8340.5496821253. The cubic root of 69564769 is about 411.2726054406.

The spelling of 69564769 in words is "sixty-nine million, five hundred sixty-four thousand, seven hundred sixty-nine".