69375749 has 2 divisors, whose sum is σ = 69375750. Its totient is φ = 69375748.

The previous prime is 69375739. The next prime is 69375763. The reversal of 69375749 is 94757396.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 43467649 + 25908100 = 6593^2 + 5090^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-69375749 is a prime.

It is a super-2 number, since 2×69375749² = 9625989098622002, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 69375697 and 69375706.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (69375739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34687874 + 34687875.

It is an arithmetic number, because the mean of its divisors is an integer number (34687875).

Almost surely, 2^69375749 is an apocalyptic number.

It is an amenable number.

69375749 is a deficient number, since it is larger than the sum of its proper divisors (1).

69375749 is an equidigital number, since it uses as much as digits as its factorization.

69375749 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1428840, while the sum is 50.

The square root of 69375749 is about 8329.2105868443. The cubic root of 69375749 is about 410.8997669788.

The spelling of 69375749 in words is "sixty-nine million, three hundred seventy-five thousand, seven hundred forty-nine".