69428775 has 24 divisors (see below), whose sum is σ = 123620560. Its totient is φ = 34179840.

The previous prime is 69428759. The next prime is 69428791. The reversal of 69428775 is 57782496.

It is an interprime number because it is at equal distance from previous prime (69428759) and next prime (69428791).

It is not a de Polignac number, because 69428775 - 2⁴ = 69428759 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 34630 + ... + 36579.

Almost surely, 2^69428775 is an apocalyptic number.

69428775 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

69428775 is a deficient number, since it is larger than the sum of its proper divisors (54191785).

69428775 is a wasteful number, since it uses less digits than its factorization.

69428775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71235 (or 71230 counting only the distinct ones).

The product of its digits is 846720, while the sum is 48.

The square root of 69428775 is about 8332.3931136259. The cubic root of 69428775 is about 411.0044280577.

The spelling of 69428775 in words is "sixty-nine million, four hundred twenty-eight thousand, seven hundred seventy-five".