69745109 has 4 divisors (see below), whose sum is σ = 79708704. Its totient is φ = 59781516.

The previous prime is 69745103. The next prime is 69745121. The reversal of 69745109 is 90154796.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 69745109 - 2⁸ = 69744853 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (69745103) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4981787 + ... + 4981800.

It is an arithmetic number, because the mean of its divisors is an integer number (19927176).

Almost surely, 2^69745109 is an apocalyptic number.

It is an amenable number.

69745109 is a deficient number, since it is larger than the sum of its proper divisors (9963595).

69745109 is an equidigital number, since it uses as much as digits as its factorization.

69745109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9963594.

The product of its (nonzero) digits is 68040, while the sum is 41.

The square root of 69745109 is about 8351.3537226009. The cubic root of 69745109 is about 411.6276937176.

The spelling of 69745109 in words is "sixty-nine million, seven hundred forty-five thousand, one hundred nine".