69674399 has 2 divisors, whose sum is σ = 69674400. Its totient is φ = 69674398.

The previous prime is 69674333. The next prime is 69674401. The reversal of 69674399 is 99347696.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-69674399 is a prime.

It is a super-2 number, since 2×69674399² = 9709043752022402, which contains 22 as substring.

Together with 69674401, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 69674399.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (69634399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34837199 + 34837200.

It is an arithmetic number, because the mean of its divisors is an integer number (34837200).

Almost surely, 2^69674399 is an apocalyptic number.

69674399 is a deficient number, since it is larger than the sum of its proper divisors (1).

69674399 is an equidigital number, since it uses as much as digits as its factorization.

69674399 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2204496, while the sum is 53.

The square root of 69674399 is about 8347.1192036534. The cubic root of 69674399 is about 411.4885392236.

The spelling of 69674399 in words is "sixty-nine million, six hundred seventy-four thousand, three hundred ninety-nine".