69045731 has 2 divisors, whose sum is σ = 69045732. Its totient is φ = 69045730.

The previous prime is 69045727. The next prime is 69045733. The reversal of 69045731 is 13754096.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 69045731 - 2² = 69045727 is a prime.

It is a super-2 number, since 2×69045731² = 9534625938648722, which contains 22 as substring.

Together with 69045733, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 69045691 and 69045700.

It is not a weakly prime, because it can be changed into another prime (69045733) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34522865 + 34522866.

It is an arithmetic number, because the mean of its divisors is an integer number (34522866).

Almost surely, 2^69045731 is an apocalyptic number.

69045731 is a deficient number, since it is larger than the sum of its proper divisors (1).

69045731 is an equidigital number, since it uses as much as digits as its factorization.

69045731 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 22680, while the sum is 35.

The square root of 69045731 is about 8309.3760896953. The cubic root of 69045731 is about 410.2471858633.

The spelling of 69045731 in words is "sixty-nine million, forty-five thousand, seven hundred thirty-one".