69899245 has 12 divisors (see below), whose sum is σ = 90828756. Its totient is φ = 51617280.

The previous prime is 69899243. The next prime is 69899261. The reversal of 69899245 is 54299896.

It can be written as a sum of positive squares in 6 ways, for example, as 26193924 + 43705321 = 5118^2 + 6611^2 .

It is not a de Polignac number, because 69899245 - 2¹ = 69899243 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 69899192 and 69899201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (69899243) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 40516 + ... + 42205.

It is an arithmetic number, because the mean of its divisors is an integer number (7569063).

Almost surely, 2^69899245 is an apocalyptic number.

69899245 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

69899245 is a deficient number, since it is larger than the sum of its proper divisors (20929511).

69899245 is a wasteful number, since it uses less digits than its factorization.

69899245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82752 (or 82739 counting only the distinct ones).

The product of its digits is 1399680, while the sum is 52.

The square root of 69899245 is about 8360.5768341664. The cubic root of 69899245 is about 411.9307016541.

The spelling of 69899245 in words is "sixty-nine million, eight hundred ninety-nine thousand, two hundred forty-five".