69348991 has 4 divisors (see below), whose sum is σ = 69549192. Its totient is φ = 69148792.

The previous prime is 69348971. The next prime is 69349019. The reversal of 69348991 is 19984396.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 69348991 - 2⁵ = 69348959 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (69348931) 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, 99580 + ... + 100273.

It is an arithmetic number, because the mean of its divisors is an integer number (17387298).

Almost surely, 2^69348991 is an apocalyptic number.

69348991 is a deficient number, since it is larger than the sum of its proper divisors (200201).

69348991 is a wasteful number, since it uses less digits than its factorization.

69348991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200200.

The product of its digits is 419904, while the sum is 49.

The square root of 69348991 is about 8327.6041572592. The cubic root of 69348991 is about 410.8469326191.

The spelling of 69348991 in words is "sixty-nine million, three hundred forty-eight thousand, nine hundred ninety-one".