69280077 has 16 divisors (see below), whose sum is σ = 94960640. Its totient is φ = 44911152.

The previous prime is 69280069. The next prime is 69280087. The reversal of 69280077 is 77008296.

It is not a de Polignac number, because 69280077 - 2³ = 69280069 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (69280027) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13698 + ... + 18060.

It is an arithmetic number, because the mean of its divisors is an integer number (5935040).

Almost surely, 2^69280077 is an apocalyptic number.

69280077 is a gapful number since it is divisible by the number (67) formed by its first and last digit.

It is an amenable number.

69280077 is a deficient number, since it is larger than the sum of its proper divisors (25680563).

69280077 is a wasteful number, since it uses less digits than its factorization.

69280077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4512.

The product of its (nonzero) digits is 42336, while the sum is 39.

The square root of 69280077 is about 8323.4654441525. The cubic root of 69280077 is about 410.7107975493.

The spelling of 69280077 in words is "sixty-nine million, two hundred eighty thousand, seventy-seven".