69897071 has 4 divisors (see below), whose sum is σ = 69951072. Its totient is φ = 69843072.

The previous prime is 69897019. The next prime is 69897077. The reversal of 69897071 is 17079896.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-69897071 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (69897077) 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, 25010 + ... + 27663.

It is an arithmetic number, because the mean of its divisors is an integer number (17487768).

Almost surely, 2^69897071 is an apocalyptic number.

69897071 is a deficient number, since it is larger than the sum of its proper divisors (54001).

69897071 is a wasteful number, since it uses less digits than its factorization.

69897071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54000.

The product of its (nonzero) digits is 190512, while the sum is 47.

The square root of 69897071 is about 8360.4468182030. The cubic root of 69897071 is about 411.9264309994.

The spelling of 69897071 in words is "sixty-nine million, eight hundred ninety-seven thousand, seventy-one".