69897073 has 4 divisors (see below), whose sum is σ = 70259428. Its totient is φ = 69534720.

The previous prime is 69897019. The next prime is 69897077. The reversal of 69897073 is 37079896.

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

It can be written as a sum of positive squares in 2 ways, for example, as 4981824 + 64915249 = 2232^2 + 8057^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-69897073 is a prime.

It is a Duffinian 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, 180888 + ... + 181273.

It is an arithmetic number, because the mean of its divisors is an integer number (17564857).

Almost surely, 2^69897073 is an apocalyptic number.

It is an amenable number.

69897073 is a deficient number, since it is larger than the sum of its proper divisors (362355).

69897073 is a wasteful number, since it uses less digits than its factorization.

69897073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 362354.

The product of its (nonzero) digits is 571536, while the sum is 49.

The square root of 69897073 is about 8360.4469378138. The cubic root of 69897073 is about 411.9264349283.

The spelling of 69897073 in words is "sixty-nine million, eight hundred ninety-seven thousand, seventy-three".