69897853 has 2 divisors, whose sum is σ = 69897854. Its totient is φ = 69897852.

The previous prime is 69897809. The next prime is 69897911. The reversal of 69897853 is 35879896.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 51079609 + 18818244 = 7147^2 + 4338^2 .

It is a cyclic number.

It is not a de Polignac number, because 69897853 - 2¹³ = 69889661 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 69897794 and 69897803.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (69897803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34948926 + 34948927.

It is an arithmetic number, because the mean of its divisors is an integer number (34948927).

Almost surely, 2^69897853 is an apocalyptic number.

It is an amenable number.

69897853 is a deficient number, since it is larger than the sum of its proper divisors (1).

69897853 is an equidigital number, since it uses as much as digits as its factorization.

69897853 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3265920, while the sum is 55.

The square root of 69897853 is about 8360.4935859075. The cubic root of 69897853 is about 411.9279671881.

The spelling of 69897853 in words is "sixty-nine million, eight hundred ninety-seven thousand, eight hundred fifty-three".