69138775 has 6 divisors (see below), whose sum is σ = 85732112. Its totient is φ = 55311000.

The previous prime is 69138767. The next prime is 69138781. The reversal of 69138775 is 57783196.

It is not a de Polignac number, because 69138775 - 2³ = 69138767 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1382751 + ... + 1382800.

Almost surely, 2^69138775 is an apocalyptic number.

69138775 is a deficient number, since it is larger than the sum of its proper divisors (16593337).

69138775 is a wasteful number, since it uses less digits than its factorization.

69138775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2765561 (or 2765556 counting only the distinct ones).

The product of its digits is 317520, while the sum is 46.

The square root of 69138775 is about 8314.9729404250. The cubic root of 69138775 is about 410.4313821700.

The spelling of 69138775 in words is "sixty-nine million, one hundred thirty-eight thousand, seven hundred seventy-five".