69897077 has 2 divisors, whose sum is σ = 69897078. Its totient is φ = 69897076.

The previous prime is 69897019. The next prime is 69897101. The reversal of 69897077 is 77079896.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 59197636 + 10699441 = 7694^2 + 3271^2 .

It is a cyclic number.

It is not a de Polignac number, because 69897077 - 2⁸ = 69896821 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (69897577) 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, 34948538 + 34948539.

It is an arithmetic number, because the mean of its divisors is an integer number (34948539).

Almost surely, 2^69897077 is an apocalyptic number.

It is an amenable number.

69897077 is a deficient number, since it is larger than the sum of its proper divisors (1).

69897077 is an equidigital number, since it uses as much as digits as its factorization.

69897077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1333584, while the sum is 53.

The square root of 69897077 is about 8360.4471770354. The cubic root of 69897077 is about 411.9264427860.

The spelling of 69897077 in words is "sixty-nine million, eight hundred ninety-seven thousand, seventy-seven".