69898787345 has 4 divisors (see below), whose sum is σ = 83878544820. Its totient is φ = 55919029872.

The previous prime is 69898787333. The next prime is 69898787359. The reversal of 69898787345 is 54378789896.

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

It can be written as a sum of positive squares in 2 ways, for example, as 23793679504 + 46105107841 = 154252^2 + 214721^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-69898787345 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6989878730 + ... + 6989878739.

It is an arithmetic number, because the mean of its divisors is an integer number (20969636205).

Almost surely, 2^69898787345 is an apocalyptic number.

It is an amenable number.

69898787345 is a deficient number, since it is larger than the sum of its proper divisors (13979757475).

69898787345 is a wasteful number, since it uses less digits than its factorization.

69898787345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13979757474.

The product of its digits is 731566080, while the sum is 74.

The spelling of 69898787345 in words is "sixty-nine billion, eight hundred ninety-eight million, seven hundred eighty-seven thousand, three hundred forty-five".