69897923 has 2 divisors, whose sum is σ = 69897924. Its totient is φ = 69897922.

The previous prime is 69897913. The next prime is 69897973. The reversal of 69897923 is 32979896.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-69897923 is a prime.

It is not a weakly prime, because it can be changed into another prime (69897913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34948961 + 34948962.

It is an arithmetic number, because the mean of its divisors is an integer number (34948962).

Almost surely, 2^69897923 is an apocalyptic number.

69897923 is a deficient number, since it is larger than the sum of its proper divisors (1).

69897923 is an equidigital number, since it uses as much as digits as its factorization.

69897923 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1469664, while the sum is 53.

The square root of 69897923 is about 8360.4977722621. The cubic root of 69897923 is about 411.9281046980.

The spelling of 69897923 in words is "sixty-nine million, eight hundred ninety-seven thousand, nine hundred twenty-three".