69479797 has 2 divisors, whose sum is σ = 69479798. Its totient is φ = 69479796.

The previous prime is 69479791. The next prime is 69479801. The reversal of 69479797 is 79797496.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 62583921 + 6895876 = 7911^2 + 2626^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-69479797 is a prime.

It is a super-2 number, since 2×69479797² = 9654884382322418, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (69479791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34739898 + 34739899.

It is an arithmetic number, because the mean of its divisors is an integer number (34739899).

Almost surely, 2^69479797 is an apocalyptic number.

It is an amenable number.

69479797 is a deficient number, since it is larger than the sum of its proper divisors (1).

69479797 is an equidigital number, since it uses as much as digits as its factorization.

69479797 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6001128, while the sum is 58.

The square root of 69479797 is about 8335.4542167779. The cubic root of 69479797 is about 411.1050834086.

The spelling of 69479797 in words is "sixty-nine million, four hundred seventy-nine thousand, seven hundred ninety-seven".