69401897 has 2 divisors, whose sum is σ = 69401898. Its totient is φ = 69401896.

The previous prime is 69401887. The next prime is 69401911. The reversal of 69401897 is 79810496.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 68244121 + 1157776 = 8261^2 + 1076^2 .

It is a cyclic number.

It is not a de Polignac number, because 69401897 - 2¹⁴ = 69385513 is a prime.

It is not a weakly prime, because it can be changed into another prime (69401867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34700948 + 34700949.

It is an arithmetic number, because the mean of its divisors is an integer number (34700949).

Almost surely, 2^69401897 is an apocalyptic number.

It is an amenable number.

69401897 is a deficient number, since it is larger than the sum of its proper divisors (1).

69401897 is an equidigital number, since it uses as much as digits as its factorization.

69401897 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108864, while the sum is 44.

The square root of 69401897 is about 8330.7800955253. The cubic root of 69401897 is about 410.9513837551.

The spelling of 69401897 in words is "sixty-nine million, four hundred one thousand, eight hundred ninety-seven".