69880138 has 32 divisors (see below), whose sum is σ = 114992640. Its totient is φ = 31726080.

The previous prime is 69880133. The next prime is 69880147. The reversal of 69880138 is 83108896.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 69880094 and 69880103.

It is not an unprimeable number, because it can be changed into a prime (69880133) 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, 161170 + ... + 161602.

It is an arithmetic number, because the mean of its divisors is an integer number (3593520).

Almost surely, 2^69880138 is an apocalyptic number.

69880138 is a deficient number, since it is larger than the sum of its proper divisors (45112502).

69880138 is a wasteful number, since it uses less digits than its factorization.

69880138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 622.

The product of its (nonzero) digits is 82944, while the sum is 43.

The square root of 69880138 is about 8359.4340717539. The cubic root of 69880138 is about 411.8931643999.

The spelling of 69880138 in words is "sixty-nine million, eight hundred eighty thousand, one hundred thirty-eight".